I got my Wiz yesterday from the gp2xstore. Here are my first impressions:
It is a little bigger than I expected. I can carry it in my pocket, but with the leather carrying case it feels as bulky as my first iPod.
Even though the surface is glossy, it has a slight texture on it, so it doesn't attract fingerprints much. The red on the console looks metallic, which did not look like that on any of the photos. It's cool, though.
I made a mistake while installing the screen protector, so the bottom of the screen is not covered. Once I start a game I don't notice it, though.
The screen is very bright.
I have seen the diagonal line a few times, but it doesn't bother me that much.
The touchscreen was way off until I calibrated the screen. Now it's way better (still not perfect).
The d-pad doesn't feel as good as the one on my Game Boy Micro. I'm having trouble changing directions in games like Ms Pac-Man.
The buttons are a little too close to each other, but I can get used to it.
I like the fact that I can rotate the "portrait" games like Ms Pac-Man and Burger Time so they take up the entire screen. That alone justifies the purchase of the console. Of course, that makes the controllers harder to use, but who cares.
I cannot judge how easy are the diagonals to perform, because as far as I know, you cannot reconfigure the button configuration in MAME4ALL, and I'm used to the Neo Geo CD controller. So I cannot do the special moves in games like Fatal Fury Special. If anybody knows if the buttons can be reconfigured, please let me know.
Speaking about Neo Geo games, the Wiz does not have enough RAM to load some of my favorite Neo Geo games, like King of Fighters 98 and Last Blade. A shame. You also have to overclock the Wiz so there is no slowdown on Neo Geo games, but that doesn't bother me. At 700 MHz Neo Geo games don't have much slowdown.
Some games have too much detail to be really "viewable" in such a small screen without hurting your eyes. Metal Slug is almost like that. Money Puzzle Exchanger is definitely hard to see in such a small screen. But there is no way in hell I would like a larger screen. This is my first GPH console; one of the main reasons why I never had a GP32 or GP2X was because I thought they were too big.
The strongest feeling I have about the Wiz is that it feels like a PC, not like a console. I stayed until 3 am last night configuring the games in MAME so they ran properly, and I'm not done. Some games like Gradius, Gradius II, Moonwalker, and Mortal Kombat don't run properly or at all, even though the package I got is supposedly complete. But what I lose in plug-and-play I gain in customability. Once I finish tweaking it, I will only have games I like there. I am happy with it and see myself taking it with me for years.