How big is your room?
Of some of those mentioned in this thread, I've owned:
NHT Super Zero 2.0
NHT Absolute Zero
PSB Image B4
My personal favorite from that list is the NHT Absolute Zero - most balanced sound to my ears, and nice resolution with a nice midrange... also images nicely. Downside is that it isn't a very sensitive speaker, so it's not a great pick if you want to go loud in something bigger than a medium sized room - in which case the woofer (in it's tiny enclosure) can't keep up, and the upper midrange and treble can sound a little harsh.
2nd favorite would be the PSB Image B4 - a little easier to drive than the Absolute Zero, but not quite as balanced - a little laid back in upper midrange, so they sound less detailed - and less bass extension than the Absolute Zero.
The Ascend HTM-200SE is nice, but just sounded a little forward to me. I know it supposedly measures flat (the CMB-170SE and CMT-340SE do measure very flat)... but I still find the Absolute Zero, a speaker that also measures pretty darn flat (see HTMag/Sound Vision Mag measurements), sounds more tonally balanced.
While I think the V-Mini is nice for what it is, I think the V-Mini's tweeter is just a little too edgy. I don't remember that being the case when I had the RC-Mini, so either I just got pickier about the high end, or the V-Mini's treble region is a little hotter than the RC-Mini. Great looking and compact, but no bass to speak of. They really need a 120Hz xover or higher. Sensitivity is pretty high, so they can get loud relatively easily. I do wonder, if Energy could've squeezed more bass out of those little woofers by sacrificing just a little sensitivity.
The NHT SuperZero 2.0 is also nice for the money, but hasabsolutely no bass...and unless they're near a rear wall, I'd say you'd want a 150Hz xover.
I haven't heard them, but the Boston E40 intrigues me...