Which power supply?

Ok, im planning on bying a new power supply for my system. I have...

MSI k8n neo2 platinum
AMD-64 3500+
2x512 DDR400 OCZ gold
BFG 6800GT

Right now i have a no-name 420 watt PSU, but id like to do some overclocking, and just make my computer more quiet with more stability. Id also like to spend under $100. Any recomendations?

Ive heard these are good...though im not sure what to get.
OCZ Modstream (450) - http://www.newegg.com/Product/Product.asp?Item=N82E16817104154

OCZ Powerstream (420) - http://www.newegg.com/Product/Product.asp?Item=N82E16817104150

Im kinda leaning towards the modstream just becasue its a little cheaper ( at monarhcomputers its only 75 with free shipping) and because every fan in my system uses the same blue LED. But if the powerstream is that much better i will be glad to get it instead. any ideas would be nice. thanks

 

They both sound like decent choices. How about considering this one, too.

ENERMAX Noisetaker 485W Power Supply

 

Spend the extra and buy an Antec