Yep, Corsair TX series is good. A bit cheaper alternative would be the 600W EVGA: http://www.bestbuy.com/site/evga-600...pply&cp=1&lp=4
In terms of quality i would put the Corsair TX a bit higher than the EVGA, but i don't know this particular EVGA model, so take this with a grain of salt.
In the $100-150 bracket there is nothing i would really recommend above the Corsair TX 650, except maybe the Corsair RM 650: http://www.bestbuy.com/site/corsair-...pply&cp=1&lp=4
(80+gold and fully modular, in my opinion worth the extra $15)
The difficult thing about choosing the correct PSU is: You can't really tell, which is a good manufacturer and which is not at the first glance. You kinda "have to know". Proven good manufacturers:
- Corsair (except their CX and GS line)
- Seasonic
- XFX (most of their units are build by Seasonic)
- Antec
- BeQuiet (hard to get and very expensive in America)
- EVGA
- NZXT
- Fractal Design
- Silverstone