Which of those is better?



How are they not any better than the one I already have?

The xfx one I have in Egypt is actually more expensive than buying one of the ones I listed and shipping it. But anyways, is the xfx one any better?
 
I don't wanna be rude but I would love to know what makes one PSU better than the other?

Also, do you have anything in mind that's better than those and still in the $50 price range?

Is a 430-450 W PSU enough for my system or should I go for a 550 W?
 
Received it 2 days ago. Works flawlessly. Everything's fixed. Time will tell if it's gonna live up to its name or not :)
Thanks for your recommendation SR-71 Blackbird