A lot of the 8" units, and some of the 10" ones, all seem to be based on very similar kit. (Virtually identical quad-core Atoms, always 2Gb memory, always a 32-bit OS, and 32/64Gb flash, 90 percent of them include Office for free). Part of me strongly suspects that Intel and Microsoft are subsidizing the crap out of that particular platform to try to make a dent in Android and iOS tablet sales.
Most of the other tablets out there are much more expensive niche market products-- and even the Surface Pro series counts there.
I wouldn't trust the Atom for gaming as far as I could throw it, but frankly, nothing Intel offers in the tablet-friendly space offers particularly robust graphics performance; if you can find something with an AMD APU, it might do better, but I've seen far fewer tablets with them.
I had a Dell Venue 8 Pro for a couple weeks; I liked the concept but had significant difficulties with my specific unit.
I note that Newegg has gotten fairly aggressive on pricing for the Thinkpad Tablet 2-- it's similar, kit-wise, to the 8" units, but with a 10" screen, and a price well south of four Franklins.