I'm still adjusting to the new look. The Ultras definitely make a bigger, flashier visual statement and I'd be lying if I said that's not part of their appeal for me (and my wife, believe it or not... she misses the visual impact of the Ultras too!). This is audio tho, and sq ranks above aesthetics in my book and my wife and I both like the sound of the Sierras, even if we're unable to put a finger exactly on it.
As far as dynamic range these new towers seem to have more than enough where it counts. When crossed over to the subs they sound every bit as capable as the Ultras. Even full range they're no joke, but that is where the Ultras pull ahead. The Sierras have no problems filling the room with decent bass, but the Ultras are definitely more capable of rattling the room, push come to shove. I hardly ever got into that tho, because I'm always using my subs so the deeper extension of the Ultras was going to waste anyway.
I've gotten pretty good using REW and the mini to dial my bass in and I feel like I wanna tackle the rest of the FR using the app with ratbuddyssey. If I can get that figured out and get good results I might pull the mini altogether. I shot Peng a pm to see if he's available to help get me started. I managed to get ratbuddyssey downloaded and pulled up my ady file, but that's as far as I got. I have no idea what I'm doing after that!
Oh, imaging. Holy crap do these towers have precise imaging! It's so good I'm thinking about going phantom mode and use my Sierra 2s as surrounds.