Just curious, what don't you like about the Remote app for Apple TV? I purchased an Apple TV over a Roku just because of how slick the Remote app was, personally, along with the good-but-not-great* airplay functionality you get with an iPad. I haven't had any issues with the wi-fi at all.

*: It seemed at first to be superb but then I found out that the AppleTV will refuse to play some (most?) content due to DRM restrictions. It's not clear if that's a problem with my HDMI cable or with AirPlay itself - I think AirPlay is simulating an HDMI connection via WiFi.