I’d be interested in the how/where regarding demos of speakers. A lot of that could give insight as to why you’ve come away with the opinions you have. For instance, I could call the Tannoys a lot of things, but I don’t think dark and recessed would be one of them.
Personally, I really like the KEF R series, my findings of the "metallic" sound are usually from poor component matching. If you like rock, the RAAL tweeter might not be the best match on the Ascends.
You say you don’t think you like metal tweeters, but didn’t think the Aria had enough "zing" on things like acoustic guitar. If I’ve ever heard a complaint on the Aria (and Focal in general) it’s brightness. Again, component matching and environment. Those are Al/Mg composite tweeters in the Aria and Chora.
I’ve been a huge Focal fan ever since I heard the Grand Utopias at the Stereophile SF show in 1997. It might be (although you don’t mention budget) you might want to demo their beryllium tweeter. Right now the 1028be (with awesome W composite cones) can be had NIB for about $4k as the last inventory goes away. I have Kanta No2’s and think they’re going to last me a long, long time.
If you’re interested in standmount speakers, I’d certainly check out the Kanta No1’s, which can be had for as refurbs $4k/pr at A4L. Another brand you might be interested in is Canton, also available for great prices on A4L. Their Vento line has titanium composite drivers and a ceramic tweeter that gets a lot of praise. Only problem is not a huge customer support infrastructure in the States.
Notably lacking from the speakers you list are Dynaudio and Revel. The former is one of the fastest, liveliest, most dynamic brands I’ve heard. The soft dome tweeters are a bit polite, but you might find them to your liking. Revel goes out of their way to make a speaker that can be placed almost anywhere, with incredible dispersion and soundstaging. Revel remains one of my favorite production brands. Dali is similar to Dynaudio, another great brand. You might also check SVS and Golden Ear, their technology might pique your interest.
I mention frequently (and see it mentioned above) I often find that when people are constantly swapping out speakers because of one issue or another, it’s almost always the listening room that is at fault. You mention you listen to them on the wide axis of your room, you should try rotating your setup 90°. Or, move one speaker closer to the other. Symmetry is not always your friend.