Which of these PSUs are better?

For a gaming system that runs on about 500-550W of power, which of these Power Supplies are the best in terms of price, energy savings, and minimal RMA rate?
Other factors may include modular vs non-modular, continuous vs peak power, and railings?. Difficult to decide for myself... but yes, I'm willing to go through so much to get the best PSU in value and performance.

Also, I am running a GTX560 for my graphics card and plan to upgrade to the 600 series in the future (hopefully)without having to change the PSU.

Rosewill Green Series RG630-S12 630W Continuous @40°C,80 PLUS Certified, Single 12V Rail, Active PFC "Compatible with Core i7,i5" Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182200

Antec EarthWatts EA-650 GREEN 650W ATX12V v2.3 SLI Ready CrossFire Certified 80 PLUS BRONZE Certified Active PFC Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371044

OCZ ModXStream Pro 600W Modular High Performance Power Supply compatible with Intel Sandybridge Core i3 i5 i7 and AMD Phenom
http://www.newegg.com/Product/Product.aspx?Item=N82E16817341017

Antec BP550 Plus 550W Continuous Power ATX12V V2.2 80 PLUS Certified Modular Active PFC Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371016

Thank you for extra information and tips.
2 answers Last reply
More about which psus better
  1. Corsair Tx650w, hey look! It even has a $15 mail in rebate! http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020
  2. the antec eart watt would be the better of the four you have listed, go with the OCZ modstream if you want to go modular.
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