Antec High Current Pro 750W and Gamer Pro 850W

[alfabet0]

Please pardon me if this is a stupid question, but I'm looking to buy one of following PSU's for a Silverstone FT02B-W case, although both more than meet my power requirements are there any key differences between them besides wattage?

Antec High Current Pro 750W PSU 80Plus GOLD
http://www.scan.co.uk/products/750w-...-fan-atx-v23-p
or
Antec High Current Gamer Pro 850W
http://www.scan.co.uk/products/850w-...an-atx-v23-psu

Is one better suited to my need than another?

My build:
Silverstone FT02B-W
Asus Maximus V Gene
Intel Core i5-3570k
Arctic Cooling Freezer i30 Intel
EVGA GTX 670 FTW
Samsung SSD 830 256gb
Lite-On IHAS123
WIN 7 64-bit

Thanks for your time.

[Support@ANTEC]

Hi There!

Thank you for posting. I would go with the HCP 850 because it has more leg room just in case you want to upgrade some of your components in the future. The High Current Pro Series are an excellent choice on building your system because both power supplies are Hybrid Modular/Semi Modular Power Supply. You need a good cable management to get a decent and good air flow especially on that case. Let me know if you needed more info.

Thanks