I guess the levels of handheld emulators would looks like this:
lvl1: really cheap and crappy handheld mp4(mp5) players
they work, but god-awfully.
sold about 30-60 bucks
lvl2: gaming gozillas, psp, ds, apple stuff
they either not portable, or not easy to use
lvl3:handheld consoles
dingoo a320, jxd3000, letcool, wiz, gp2x, caanoo, letcool
those are the ones you're looking for
cost anywhere between 70 to 140 bucks
lvl5:handheld pcs:
pandora, mbook m1 etc.
those are too expensive, and not easy to get your hand on.
cost about 500 bucks
we can see there is a huge gap between lvl3 and lvl5, there suppose to have lvl4 stuffs.
lvl4 handheld suppose to be more powerful than lvl3 handhelds, and less expensive than those handheld pcs.
I guess a tablet with buttons fits in this category perfectly.
perhaps, this RG opens up a new door for games. This mighty category of tablet pc with buttons may crush every other handhelds, with their nice performance, good build quality, and a just-right price.
I guess, this is very likely to happen.