Corsair CX600 or Antec BP550 ?

Hey guys, Im shopping around for a new build and I got two PSUs to consider..

Corsair CX600 600W Power Supply
http://www.memoryexpress.com/Products/PID-MX30800(ME).aspx?cc=1

or

Antec Basiq BP550 Plus 550W 24PIN ATX 12V Modular Power Supply Active PFC
http://ncix.com/products/index.php?sku=41979&vpn=BP-550...

Both are with MIR's but the 600W ends up 10$ cheaper and has 50 more watts..

In terms of quality and reliability, is the CX600 a MUCH BETTER DEAL, good for the price, or not worth it even if its cheaper?

Thanks!

my build:
gigabyte x58a-ud3r
12GB 3x4gb OCZ Gold DDR3
eVGA GTS 450
1TB Seagate Barracuda 7200.12
i7 960
antec300 case