It depends on the performance you want, your rig won't be bottle-necking anything but the highest of the high end of cards. I'd suggest stepping up to a 270X; not much more money but much better performance. 260X has TrueAudio, however. What is your ideal price point and how many watts is your psu?
Then the 260x is a better option. The HD 7850 would also fit your budget and also comes with the never settle silver package (2 free games). The 650ti is significantly slower than both the 260x and the 7850.