Plaid13

Well I apparently need a new power supply for my pc and I am having trouble deciding what to get. I think i want to get a antec or thermaltake. Pretty sure i need at least 550watts. But i would like to get some extra opinions and maybe suggestions on what model to get. Keeping in mind I am damn near broke and cheap is good but not worth losing quality and thats why i i narrowed it down to those brands. Getting it from tiger direct would be a plus since i live near the warehouse outlet and can just go pick it up there. But Newegg.com works as well simply because they have good prices and a huge selection.

My computer is a amd 3700+ on a asus midrange board dont remember the exact model off hand.

Has 2 gig of ddr2 ram
2 250gig sata 7200rpm western digital hard drives
1 180gig ide 7200rmm western digital drive
a lite on 16x dvd burner and a sony dvd drive
a soundblaster 5.1 pci sound card
a pci express 16x 7800gt 256mb nvidia video card
1 120mm fan and 2 80 mm case fans
Then of course a optical mouse and a usb keyboard. And sometimes a usb flash drive.

Pretty sure thats all thats in it thats in it.

Any suggestions on what power source would be the best bang for the buck and still be reliable would be a huge help. Would like to keep the price under $100.