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!)