I would stay away from the Antec VP series. They are tier 3 on the tom's hardware PSU hierarchy which is sort of the minimum acceptable quality you would use but these supplies don't even get an 80 plus rating.
The Cooler Master B version 2 series are a newer supply without detailed reviews yet. Quality might be a little better than the Antec VP series but not much.
Here is the list:
http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html
You would be better to get a lower wattage supply of better quality. 700W is too much for any single GPU system and you wouldn't trust either of these supplies in a system with multiple GPUs.
What is your CPU and graphics card?