Hello my Name is Tony and I'm a gadgetaholic ;). Seriously the only way for me to decide was to buy an ATV and a Roku to see which I would like, and I think it's 2 years now and I own 5 Roku's (family members and work) and an ATV that never really gets used. And it keeps getting better as they add channels. Did I mention I also had a VUDU which I sold right after I got the Roku?
Poor wifi reception. Had to buy a range extender to use it anywhere in my house but the TV next to the wifi router. Bedroom 15 feet away was a no go even though computers and smart phones etc work. Very slow to respond to remote. Half the time I cannot tell if it is working.