Good afternoon.
I got them unpacked and setup late yesterday afternoon. Listened for about an hour or so to the same tracks plus some others. The one difference I am hearing is more air, more open in the mids and upper registers. But the biggest difference is in the bottom end. It is much more solid, with better depth and better control (I made no changes to the sub, still crossed over at 50hz). I told you how much I didn't like the bass before on the live "Hotel California', too much, too boomy with the 1.6's. The 2.7's sound very good on that track, they have great presence and great control of that bottom end. No longer bothersome. Similar to how they sounded in your room.
My wife doesn't have a critical ear, her only comment was that they are bigger, but not as a complaint, just a comment. ;-)
I think I will start looking at amplifiers and subs for my next upgrades in the next year or so. Which model(s) of REL would you recommend based on my room size 14x20x8?