Look in the name. Any EVGA power supply with a "2" in it is superb quality (B2, G2, P2). The older ones have a "1" in them somewhere (B1, G1), and while they are still decent quality, they aren't as good as the revisions.
Depends on what you are using it for. For something like an office rig or basic browsing system or htpc it would be fine, even a entry level gaming rig. But in an overclocking or more powerful gaming system I wouldn't suggest it.