Replace Revel Ultima Studio with Magneplanar 3.7i (???)

My Revel Studios, part of an all Ultima 5.1 surround system (Voice, Embrace, Sub30, rest below), are getting on in years and I've been thinking about replacing them. My prior speakers, about 15 years ago (wow!) were MG-2.7s which I liked very much, but were limited in bass extension and (home theater style) volume.

I'm considering the 3.7i, but it's a pretty big change in design philosophy. While I can hear them at a local dealer, it's obviously much more cumbersome to audition at home so looking for anyone that has experience, advice or just thoughts about this particular direction. The rest of the system is staying put (for now), including the center, surrounds and sub. 

Thanks, and happy listening. Chris V

Oppo BDP-105D | PS Audio Directstream Junior | Bryston SP3
Bryston 6B-SST2 (LRC) | Bel Canto S300 (Surr) | Nordost Heimdall 2
PS Audio P10 Powerplant (everything!)
Totally different.  Always do your homework first.   Nobody can tell you what you will like best.

As a long-time Maggie (and other dipole planar loudspeaker) owner, let me say that the two main considerations in their use are:

1- Room size. If your room does not allow them to be placed at least 5’ from the wall behind them, they are probably not right for you. 3’ is often quoted, but that is actually insufficient in creating the desired minimum of a 10ms difference in arrival times between the front and rear waves of dipole speakers.

2- Amp power. For Maggies, the more the better. A great amp for the 3.7i is the Sanders Magtech. Due to their series crossovers, the .7 series Maggies do NOT allow bi-amping (bi-amping with a ss amp on the bass drivers and a tube amp on the tweeters has long been favored for Maggies), so you need a real good high current power amp.

With enough space and power, magnetic-planars have their own unique capabilities. Images are lifesize (unlike the "miniature" sized images from many boxes), those images appearing to not be attached to the speakers themselves. Drums are reproduced as from no other design imo (I’m a drummer), as are pianos. Singer’s voices are where the should be, about 5’ from the floor (that’s important to me; I listen to a lot of singing).

Electrostatic speakers are also planar dipoles, and do some things better than Maggies. They, generally speaking, possess greater liquid see through transparency and low-level resolution. But they too have their limitations---no bottom octave, limited maximum SPL, small sweet spot. And they are mostly more expensive than the 3.7i, around twice as much.

There is a magnetic-planar alternative to the 3.7i, one that requires less power and comes in a smaller package (5’ H, 13" W)---the Eminent Technology LFT-8b. It retails for less than half the price of the 3.7i ($2499/pr), has a midrange driver covering 180Hz to 10kHz with no crossover (!), an 8" sealed woofer for 180Hz down, and a ribbon tweeter for 10k up. It is an easy (mostly resistive) 8 ohm load, so tube amps like it. And it CAN be bi-amped. An under-appreciated bargain!

The best Magnepan set ups I've heard have them 1/3 or more into the room and away from side walls.    The best was at Jim Smith's old Audition store in Birmingham Alabama. My friend and I both bought a pair on the spot that day. 
I would not do it unless you are very into listening to piano, strings and vocals and are adamant about a new perspective on these genres. The revels are awesome, and you sort of sound like you are bored more than anything else tbh! 

You might also want to demo the new PerformaBE series as well. You might end up liking them enough to stay with Revel...
The new Revel f228 be is outstanding, I have been listening to Revel since the day they came out and the new technology is a breakthrough at its price point. Not a single person who has come over to hear them hasn't just been bowled over by their performance. 
I think the comment, "you sort of sound like you are bored more than anything else" is right on the mark. My Revels are, indeed, wonderful speakers. Maybe a new amp... 

Thanks for all of your responses!