Well I am too lazy... but since it is finally at a market ready state (my preview unit from october 2005 still has a few flaws) I guess I can post this really complete review:
http://craig.gp2x.de/review/GP2XReview.html
It is from a distributor, so take it with a grain of salt, but over all it is pretty acurate.
Nitpicks: If you are really anal about the digital stick, than the GP2X might not be for you, as it has a slightly annoying deadzone, but noting extremely serious. And the Amiga emulator still needs some work, so don't get it just for that (same for the SNES but to a much lesser extent... it runs pretty well).
Last but not least, the GP2X is a geeks toy! So don't get it if you are completely computer illiterate [img]/images/graemlins/laugh.gif[/img]
P.S.: there will soon be a docking station, which will turn the GP2X into a complete homeconsole, with high qualitiy TV-out, HD, network, wifi, serveral controllers etc (anything you can connect to a Linux USB port [img]/images/graemlins/wink.gif[/img] ).