Cooler Master vs. Corsair vs. Asus (650Watts)

Hy everyone!

I m building a gamming rig. The list of my approved items just contains an ATI HD4850 so far.

The pending list is PSU (Corsair vs. Cooler Master), mobo (MSI Neo P43 vs. ASUS P5QL-Pro-P43 Based), and an E7200. I hope I m keepin plenty of room for future expansion wid a PCIx2 based slot, Core 2 Extreme support and a 16 GB of RAM (in MSI board).

I wanna know which PSU I should opt for my choices are only three!

1. Corsair 650 WATTS SLI READY (TX650W). (Also plz differentiate b/w modular and non modular PSUs of Corsair i.e. HX's vs. TX's). http://www.corsair.com/products/tx.aspx

2. Cooler Master 650 WATTS REAL POWER PRO SLI READY (RS-650-ACAA-A1). http://www.coolermaster.com/products/product.php?language=en&act=detail&tbcate=22&id=2551

3. ASUS 650 WATTS U-650GA. http://www.asus.com/products.aspx?l1=7&l2=59&l3=757&l4=0&model=2408&modelmenu=1

All of them lie in the same price band. I m currently tilted towards Corsair as I love their memory sticks. There efficiency levels are almost the same. It comes to who really is the expert in the field. Thats what I think! wat do u think who's the daddy?