OK, so my Dingoo from store.cn, one of the TGBUS.com fronts, arrived today. Here's what I can tell you thus far:
There is a Paw on the back.
made in china
Serial number near left speaker has a BK in it near the beginning, but has no HK in it.
LCD is ILI9331
Firmware is 1.2
When I installed Dingux, I had to use Puppy Linux (I'm on 64-bit Windows 7 and that didn't work). Once there, I discovered that the Dingoo wouldn't even go into the install mode when I used the standard hwinit.bin file. I had to substitute the hwinit_2_9331.bin instead, and then everything worked.
(I'll also note that the "idiot's guide to installing Dingux" screws up on the linux terminal commands, and omits the necessary "1" between usbtool-linux and zImage_dual_boot_installer. I finally figured it out myself.)
So far, I've had a few freezes, most notably in some third-party native Dingoo emulators. However, it works pretty well and Dingux installed without my pulling out too much of my hair, so all is well.
I got the official sleeve and silicon skin for the Dingoo with the order, and they're both pretty nice. I don't like the silicon skin for gaming, though, as it impedes the D-pad a little too much (fireballs in Capcom games were tough with it on). He also had a bunch of games loaded on the NAND; Pretty much all of the ROMs were in Chinese, and very few of them had filenames that describe the game; Instead, everything is made to appear pretty generic with numbers instead of names. Still, there's some interesting stuff loaded on it. For someone who doesn't want to do any searching for ROMs, this is a good buy.
The unit itself initally gave off a sort of burny smell, and I have to say, after owning a GP2X Wiz, that the speakers on the Dingoo are horrible in comparison. The unit itself feels better than the Wiz (especially the ABXY buttons) but I can't get used to the R & L shoulder buttons yet. They're too small!
I can endorse store.cn (and other related storefronts) as a decent seller *at the moment* if you're looking for a Dingoo. Shipping speed was decent, and extras included were impressive, and (for now, at least) he doesn't seem to be selling the HK or unpawed units.