What would give me the best preformance for my dollar?? (On a Budget)
It's whatever you can afford.
GTX 660 has a bit better performance-per-dollar ratio. The Ti will give you a small bit of performance increase, I think around 10-15% in some games. Both are limited by the 192-bit bus and are best used for a single monitor, 1080p environment.
If you are looking to go SLI in the future on a single 1080p screen, or even a 1440p screen, I think going for the 660 (non-Ti) is a better option, as you will save even more money for SLI and the scaling is very good, as good as the Ti and the SLI performance is only marginally worse (just like single-card comparisons).
Basically, if you can find a Ti for around $200 then get that, if not get the 660.