i am looking for a new PSU and have decided on either the
OCZ EvoStream OCZ720EVOSLI 720W (http://www.newegg.com/Product/Product.aspx?Item=N82E16817341005)
or the
OCZ OCZ600GXSSLI GameXStream 600W (http://www.zipzoomfly.com/jsp/ProductDetail.jsp?ProductCode=316504)

Both are under $60 US dollars (with rebates). both have (4) 12volt rails
Besides the obvious differneces in watts (600 vs 720) the 720 Evo also is modular ( a plus). However, the 600 xstream has a 120 mm fan (it would seem a plus), while the 720 Evo has a 80mm. Also, while there seems to be a host of good reviews for the 600 xstream, but i cant find any detailed reviews for the 700 Evo.

I really don't do any intense gaming, and am not currently overclocking. i run a AMD x2 6400, 2 gig ram, 1 serial HD, 2 Dvd drives, also have 2 web cams running during day. My last PSU crapped out, and have a 600 coolmaster (or coolmax) in there now that has been laying around. However, it sounds like a jet airplane, and noise seems to vary---so, i'm looking to get a stable PSU at a decent price...

What are your thoughts?