Dingoo: How good is it?

I was interested in buying a Dingoo, price is low, battery life is good, d-pad should be ok and booting time is fast.
Linux can be installed and should attract more developers and programs to the system.

But... what can you do with it now. Personally I'm not that keen on spending money on a handheld that will be great "one day...".
I already own a GP2X F100 and F200 and to buy a Dingoo it should at least have some emulators that work better on it than on the GP2X.
Spending time on forums trying to get answers to this question didn't help.

The best emulator right now is probably Mame4All Dingoo V1.0. I've seen reports that it lags with some games.
Not everything you can download from the file archive seems to be working properly (link to the Dingoo library) and basically there isn't a lot ported yet.
GP2X has got a huge library with a lot of optimised software. Picodrive is absolutely amazing and full speed on it. Haven't seen reports of the Dingoo getting there.

How long will it take for the Dingoo to reach that state? If it ever will...
So still got my doubts, the Pandora will probably arrive long before the Dingoo has reached maturity.

[Edit July 28th]

Good and bad news for Dingoo owners.

Good: Picodrive (Sega Genesis emulator) has just been released and seems to be working great.

Bad: On screen tearing on the Dingoo is probably not solvable with software according to booboo (creator of Dingux)