The problem is your Thermaltake PSU, it's an overrated piece of near-junk. The ones you linked are not much (if any) better.
Stick to Seasonic, Antec, XFX, FSP, new Rosewill, or Enermax/LEPA. Avoid Corsair Builder V2, as information at http://forums.hardwaresecrets.com/not-so-tough/8805?threadid=8805?goto=newpost
indicates they use capacitors from an inferior line known to fail miserably; the original Builder models were built by Seasonic and are good, but the new CWT versions will likely opt for early retirement.