When purchasing computer parts the last thing you want to skimp on is the PSU. Personally, I will pay twice as much to get a quality unit. Corsair and Seasonic are my favorite brands but they are not the only good brands out there. I don't really trust Thermaltake for PSU's. They don't usually get the best reviews.
I use a ThermalTake PSU and it work well , never had a sigle problem