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
To all,

Thanks for the replies I have received so far, but also want to mention a possible direction change I may be considering as an alternative to the 3.7's to see what you may think?? I am thinging of adding a JL Audio F112 sub and just keeping the 2.7's.

Any thoughts on this route?? I want a sub to run full range with my speakers and be fast enough as not to muddy up the fast, taut speed of the 2.7's.

I know the Thiel Smart sub would also probably be a good (and logical) choice, but my dealer has a JL coming so??

What say yee all??

Thanks again!
The JL Audio subs are the best that I know of!, some may say, there is no such thing as best, well, after you listen to a broken-in JL audio sub, and tinker with the controls, you should be quite smitten!
I have a JL Labs sub and feel it works very well with my Nola speakers. I'm sure that you can get one to work with your speakers, too, it has a lot of adjustments you can make. I still think the Thiel sub might be a better choice, though, as it has a passive crossover that was designed to integrate with Thiel loudspeakers.
If extreme low bass is a high priority, then adding a sub is definitely an option. However, my experience with subs is that it can often be a messy business trying to get them to integrate optimally with the main speakers, depending on the sub you choose. There are potentially many parameters that need to be carefully managed to get it right: crossover frequency, crossover slope, sub placement with respect to room standing waves, sub placement with respect to the main speakers, crossover electrical phasing between the main speakers and sub, etc. I used a sub when I had Thiel CS2.3's, but it took a lot of work to get satisfactory results.

However, if you can manage the price differential, my opinion is that upgrading to CS3.7's will make a bigger overall improvement...not so much in the bass but in most other areas. On the other hand, if you are ready to spend $$, then you really should audition a bunch of other speakers to sample the alternatives.
Jakegt3,

Thanks, I am pretty sure I am sticking with Thiel now period as they have the sound I have been searching for. That said, I would love to get the 3.7's but it looks like I am going to get a sub and just keep the 2.7's as no body seems to be buying these days. (Have to sell the 2.7's to be able to do it) I am very happy with the 2.7's in my room and personally I love their bass as it is and don't even really need a sub, but you know!?!? :o)

BTW...Looking at the new JL Audio E112. May make a decision tonight and call it a day.