ronkent: I have owned my 2.2's (#991+#992) from 1992 to the present, and I haven't been seriously looking to replace them. I have had an interest in the 2.4, 2.7, and especially the 3.7, but the investment needed to make the change hasn't made sense to me given how much I like my 2.2's. Also, the 2.2's are not so big that they dominate my living room, and the natural cherry of the speakers is a perfect match for the wall of built-in cherry cabinets in the room.
My home theater in a different room includes five Powerpoint 1.2's and a SS1 sub in a 5.1 configuration, so I have a very positive appreciation for the excellence of Thiel's coaxial tweeter/mid designs. I can see how having a combined tweeter/mid in a floor-stander like the 3.7 would eliminate some of the issues that can arise in the 2.2 if the vertical listening position isn't just right.