One of the problems you will have is that while $100 is not a bad price for THAT specific power supply, there are a lot of 750W supplies that are good (not the junk no-name ones) that are much cheaper.  I used mostly rocketfish 900w that I paid $50 each for.  None have died, all in use all the time.  I do not push them too hard, I treat them like 750W supplies.