Are you buying this PSU new or used?
Information on SilverSTONE PSUs is HERE:
The CWT White - NO!
The SirTEC Bronze - NO!
The FSP Gold is OK (Similar in quality an build to an eVGA GQ).
You failed to mention where you are located, or what system components you will be powering, and whether you have any power hungry upgrades planned for the future. A 700W may be enough, or it may not (as in a 2xGPU high power gaming system!)
But the Focus (semi-modular), Focus Plus (fully modular) Gold, EVGA G3, or the Corsair models listed above are all good choices.