batmanfan,
I've made numerous comparisons of my 2.7s vs my 3.7s in this thread and I'm presuming you've read them already (as you said you've read through the thread).
Of course I empathize with the audiophile nag in the back of the mind "could I have gotten something better?" I'd originally been deliberating between buying a pair of used 2.7s in beautiful ebony, vs the 3.7s in other finishes (very nice finishes, but none in my preferred ebony finish were available).
The 2.7s would be an obviously better fit for my room size/aesthetics wise. But I thought if I bought them I may well end up thinking "these sound so great that I wonder how much better the 3.7s would have been."
I chose 3.7s over 2.7s so that I wouldn't have that niggling doubt that I didn't go for the best I could get. The 3.7s turned out to be awesome and sonically fantastic in my room. But the funny thing is, especially due to the 3.7s physical size in my room, I started wondering "maybe I should have gone for those 2.7s after all."
It's a curse ;-)
So when the 2.7s in ebony showed up on audiogon I couldn't resist to try them out.
And it turns out, it seems: yes, the 2.7s are the one that best fits my needs.
As for selling my 3.7s, I have decided I'd like to sell them soon, but still haven't decided which route I'll take - trade in, selling them only for local pick up, or opening it up to selling them to someone on Audiogon.