If you don't care about wi-fi go for the 650. Personally I think Wi-Fi is extremely handy. Being able to browse my books on Sugarsync from my iPhone and download them whenever I want without putting hundreds of books on my phone has been super handy. But I have a 505 which doesn't have wi-fi and I manage. It's not a huge deal. Now that I'm used to what wi-fi can do, though, I'm likely going to get an e-reader with wi-fi. Otherwise I'd get the 650 or 350. much more beautiful than the T1 imo