Thiel 2.7 VS 3.7???


I am kinda torn at the moment and wondering if "anyone" has had a chance to compare these two speakers by chance?? I own and love the 2.7's and want to make the lifetime plunge and bump up to the 3.7 while I have a chance, but cannot get a handle by reading reviews if the main difference between the two is just in the lowest bass where I can possibly make up for by adding a sub or two?? I know there are probably other slight differences (Or major???) but have no way to audition 3.7's before I decide. I will either make the plunge and take my chances or keep the 2.7's. But thought I would check here first to see if anyone has any first hand experience with the two.
telescope_trade
I auditioned both the 2.7 and 3.7 at a local dealer while I was shopping for speakers. Both had a very similar tonal character but I thought the 3.7 was the much better speaker. It was more open and transparent, and sounded less congested on complex musical passages. The 3.7 also had slightly more extended low bass response, but the difference was not huge. Both were auditioned in the same listening room with the same electronics. I know there is a significant price difference between the two speakers, but in this case you get what you pay for.
I can offer an opinion;
Recently, I had th epleasure of comparing the CS 2.4SE & the CS 3.7 at the same dealer/same day of demo.

The CS 3.7 is outstanding in every way, but, you will need a room of 20x20, 25x25...etc. The 3.7 will only shine is a very large space, as it needs that room, to open up.

The CS 2.4SE is the same kind of outstanding, only a smaller scale.
I don't know where the "congested" reference pops up from, must be the room or something? My 2.7's are the polar opposite from congested?? Super transparent & open at all volumes. Nothing but ultra clarity is what I get. It's all about the room & setup I guess. I would never even want to upgrade from the 2.7 to the 3.7 if I heard any congestion or muffling or anything even remotely close to that. I have owned hundreds of speakers and have heard congestion & muddiness & darkness etc...etc... Thiel 2.7's are not that for sure. They did sound a little like that during break in, but not at all after. That did take 500 + hours though.

Let me elaborate on what I meant by the 2.7's sounding "congested". First of all, my comment said it was congested on "complex musical passages". Specifically I'm referring to large scale orchestral music. The resolution of individual instruments in an orchestra is better on the 3.7's. The 3.7's simply handle this kind of material better without sounding strained or congested, probably because its dynamic range performance is superior. But that's what you are paying more for.

I should repeat that I listened to both the 2.7 and 3.7 in the same room with the same electronics, so those variables should be mostly eliminated in comparing the two speakers.

It is possible that there was something wrong with the particular pair of 2.7's I auditioned, but I can only report what my ears heard. I'm guessing that if you really like your 2.7's, then you will absolutely love the 3.7's. I do also agree with one of the comments already made that the 3.7's really need a larger room to "bloom".
@ pops, Hi, I agree, riding off into the sunset is a dream I am trying to full-fill, to reach a realization of a sound is full-filling that there is no need to further spend money and go thru more frustrations is quite peacefull to me, a since of satisfaction!, I am proud of your accomplishments going that direction!