Very nice.
I got this for my wife to play retro games. I was able to find several console emulators for it. The screen is small but bright, the sound is good. She is really happy with it.

Great
It does the job it wants to!
Run emulators pretty good (all I tried at least),the casual embeded games are pretty simple, but they're fine. I don't have any issue about the buttons.
It lacks "exclusive" games, though. But they're coming, says the site.
I'm a developer, and I use it as a handheld for my needs, like a
supermarker list and checkout.

Great Handheld
The hardware is very solid, the d-pad and buttons are great. The screen is beautiful and bright, and the console is small enough to fit into most pockets. The only problem I have is that diagonal tearing is clearly visible in most games and apps (even built-in games). Apart from the tearing problem, it's pretty much perfect.

1 in the stream of reviews
the package is really nice it looks really profesional
opening it up and seing that small gp2 wiz and I feelt a slight disapointment due to the small screen.
somehow I was in a beleif that the screen would at least be 3inches.
the screen has a really god brigthness contrast wich makes up for the small screen and smaller text that looks like its only a pixel high is readable without any problem.
the touch works really good after you calibrate it.
the sound is ok and even better with headphones.
the microphone works really well as long as your close to the unit (atleast 10-15cm away).
the buttons feels really high quality and so does the shell for the machine.
not so many new apps for the machine when I got it but its getting better for every day that goes by.

overall I love the machine and hate that the screen is so small even though it has touch and a pen that doesnt break when looking at it.

Wow
This has to be the best console I have ever purchased.
The screen is excellant, the emulators are excellant, everything is excellant!
I do have to say though the Wiz isnt being used to its full potential......yet.
This will very soon become one of the best portable gaming consoles in the world.
My recommendation is you should buy this fantastic product.