Eh, I bought one of these on sale during the last big sale and was sorely disappointed. It was barely usable despite my network streaming video fine. Your mileage may vary of course, but this review is a little, ahem, exaggerated.
To me the issue is more that the controllers are a bit annoying to use and there are not that many games that are co-op / local multiplayer and that support controllers on steam.
Latency is the big issue, so FPS games are right out. Once you realize that, then you can choose the games you play with it to fit the platform.