Proac D30RS vs. Spendor Classic 1/2 (or maybe Harbeth SHL5+)?


Hi everyone! Should the dice fall right, I might soon be able to start buying the components for a new, much better audio system. Please advise me because I can’t listen the specific models I’m interested in, I’ve only heard their more or less close relatives. Some relevant information (sorry for the long post!):

1. Room: about 23 square meters, about 0.6 meters empty space behind the speakers, placed on the the long wall, about 2 meters apart and 2-3 meters to the listening spot.
2. Music: mainly classical and jazz, also some rock (Led Zeppelin, Pink Floyd, King Crimson...), pop (Sade, Jewel...) and, rarely, electronic music (Vangelis, Jarre etc.). A lot of piano.
3. Preferences: the correct reproduction of piano is of utmost importance; in general, I want great reproduction of the acoustic instruments. I want to hear easily the differences between various timbres, the materials the instruments are made of etc. I also care a lot about good microdynamics and macrodynamics; tactile, detailed, effortless and lively sound at low to medium sound pressure levels; fluid, relaxed and extended highs with good speed (I love my Stax headphones!); colorful and linear midrange (not thin because of a dip in the lower midrange or with exaggerated presence zone), full and reasonably punchy bass down to 30-35 Hz, good soundstage width with a feeling of space. I know, I want a lot. I hate an (even slightly) bleached, grey, monochrome sound. I want a lot of light in the sound, and prefer it slightly warm.
In terms of future matching: I hate amplifier hiss, so the future amplifier will have to be very silent, hence no tubes I guess. I know, Proacs love tubes. Maybe I’ll try a pair of Schiit Aegir power amps, for a start, I don’t know yet.

4. Acceptable compromises for me: I can live without bass extension below 30Hz, great soundstage depth, soundstage height, the ability to play very loud, a very wide sweet spot (although I’d prefer good horizontal dispersion).

5. A few relevant past experiences:
a) Spendor D7 (with Pass Labs pre / power, PS Audio CD player and dac): not for me, great detail and extension but much too incisive, the tweeter was almost screaming, elevated presence zone with a recessed midrange below.
b) Harbeth M30.2 Anniversary (with low powered Sugden @! SE class A amplifier): too anemic / polite, needed more power IMO, made me realize I need greater scale so probably a bigger speaker
c) Proac D48R (with Devialet 250, highly treated, almost anechoic rather small room): incredible highs! Best upper piano notes I’ve ever heard. Very detailed, tactile and extremely silent background (both the room and the amp contributed). A bit dry and clinical mids and bass - must have been the amp? The violins did not have enough sweetness, for example. In spite of the lively and very detailed sound at low levels, I think I needed a bit more body to the bass (not amount, it was definitely enough, but, I don’t know, midbass fullness?) so I was tempted to crank up the volume. When I did it, the bass over-pressurized the room. Remarkable sound, anyway, maybe the best I’ve heard.
d) Spendor SP2/3R2 (with Densen top of the line integrated amp and M2Tech dac): the most balanced sound I’ve ever heard, everything was in the correct proportion. Great wooden and textured sound of the cello and in general the reproduction of the acoustic timbres was great, good scale of the orchestra (that pleasant sound a big box is able to reproduce!), nice and deep enough bass (but it was a bass-y sounding room, so I don’t know about that..), silky and nuanced highs. I liked everything about them, and listening to a Spendor A7 later on (with a similar if not identical tweeter) was further confirmation that I like this tweeter.
I’ll probably get a chance to listen to the Harbeth SHL5+, but I don’t expect to like it more than the Spendor Classic sound.
So I expect the Spendor Classic 1/2 to win on tone, timbre, scale and naturaleness and the Proac D30RS to win on extension, detail, effortlessness and pristine highs. What do you think? What do I do?
Thanks for your patience!
donquichotte
I am using solid state amplifier I can assure you noise floor is almost zero once I said ’dark’ I meant they have the black silent between notes that many audiophiles are seeking for .The D30 sound is completely natural and effortless with no artificial coloration violins in reality if you hear them in live concert tend to be harsh and the D48 and the D30 as well are faithful to the original recording ,sweetness of violins you’ll find at speakers with high colouration which tend to round off the highs  not in Proac speakers.
I see, thanks a lot for the explanation! Sound very promising. What amplifier are you using with them? I'm really tempted. I'll listen to the supposedly much inferior D20R in a few days. I have high hopes (but if I go for Proac, it will definitely be the D30RS).

As for the Harbeth SHL5+, I was hoping I'll get the chance to listen to them in a couple of days. Well, bad luck, today I've been told they are not available for audition anymore. :(
I am using McIntosh power amplifier and pre/dac.
The D20 are inferior speakers compare to the D30 they are in completely different levels.
Didn’t hear the Harbeth SHL5+ so I can't comment about them.
I know they are inferior, but this is what I can audition. I hope that, having heard the D48R and D20R, I'll have a better idea about the D30RS' sound, especially the tonality or "house sound".

You've been a great help and I don't want to abuse your kindness and your time, so only if it's not too much to ask: can you briefly compare the D30RS to the D48R? Why do you say the midwoofer in D30RS is much better, what sound improvements (beyond the better room matching) should I expect if I buy the D30RS (compared to the D48R I auditioned)? Much appreciated!
I have heard both - the D30RS and D48R. I own the D48R because I had the room for it. It is in a completely league compared to the D30RS. And it better be - for the price and size. That said, if you cannot provide breathing room for the D48R, then don’t buy them, cause they can overwhelm the room. I feel that it is the space from the side wall that matters more to the ProAcs, compared to the wall behind. But they will benefit immensely if you keep them away from the boundaries.The D48R are everything that the D30RS are plus they do a sense of scale and dynamic swings that is difficult for smaller loudspeakers. The midrange of both these speakers are to die for. They both image like crazy and if you like vocals, then these excel at it. They both have tight bass, with the D48Rs going deeper.