I see several people complaining about Roku requiring a credit card to register, but if they just look at the webpage, they would find an option to skip entering a CC.
I've have two roku originals, one that was purchased new about 3-4 years ago and still going (but only 720p). Got a used one off a ebay about 2 years ago (the guy didn't reset it so I could have used their netflix etc accounts, but I did a full reset ), it worked wirelessly for about 6 months and then stopped working, so I switched it with the one in the living room (it's wired). Got a re-furbed 2 XD about 6 mnths ago and still working.
When the 2's first came out, I think there was alot of problems trying to connect via wireless, especially the wireless-only ones.
722, Visionsat, IV200, Fortec Merc II, AZbox elite, 36" Glorystar Dish, Sadoun LNB, QPH -31, STAB HH90, soon - 6ft WSI special dish w/ PM24