>Well I can tell you very green has got it running rock solid. It could come straight out of the box and be better than most factory installed software.
Yes, Nook HDs' ace over all of the other cheapos is that it has full, stable Android support, aside from its gorgeous fullHD display, thanks to verygreen & Co. Dollar for (marked-down) dollar, it is the best Android tablet today, and probably for the rest of this year.
As far as the public knows, Nooks are still "enhanced e-readers" with good hardware, but with limited functionality and a tiny ecosystem. But even without the XDA value-add, the stock 2.1 ROM update has moved Nook HD into a very good all-purpose tablet that is worth at least its MSRP price. With the XDA boost to full Android, I would peg the Nook HD+ as comparable to the full-sized iPad, and the HD equiv to the mini iPad. In short, the HD line is punching way above its weight class.
The TP has nothing on the Nook. The TP has crap hardware along with a dead-end ecosystem, and it took months for it to become a usable Android device. No one would claim it to be a great tablet, only that it was cheap.
The problem is that the Nook HD's potential is known to a handful of people. Once more people know that you can buy an (almost) full-sized 1080p tablet with great screen, quality hardware, good battery life, and full Android for under $150, the rush would be ten times that for the TP.
Having just converted to CM10.1 emmc (thanks again to verygreen and leapinlar), I will say that while the stock ROM is much more limited than AOSP, it is also considerably simpler and thus more attractive for the newbie user. AOSP/CM's hundreds of setting options, with even Easter-egg options like how to enable the developer settings (to enable boot to recovery), are something only a geek can love. I would hand Nooks with stock ROM to my tech-deficient family; I wouldn't hand them Nooks with CM unless I had set them up first.