2500K is well worth the extra + OCZ PSUs are not the best, they are not to bad but you should be able to get a Corsair or Antec for a similar price.
Yeah but I found this one for a deal. $35 and it's modular, which I'd prefer because I don't want to deal with all those extra cables. The closest match I've found is an Antec 550W ATX12V and it's double the price. I know my overall price is still pretty good but I'm trying to minimize as much spending as possible, leaving some extra cash in case I decide to add a SSD or something along the lines.