Strange that over here you wrote 'this year', but anyhoo, why don't you have WiFi at home, if I may ask? Is internet unavailable at your location? Is it remote?
Well I get the same 5-6m down on my dsl line so when I'm using the ilad as the video source for my second tv set. It's the same to use 3G and since is unlimited why not.
Actually since no one else it's using the iPad bandwidth most of the the time is faster...