Oh, I don't plan on spending any money, I just have a few cards at my disposal to use if I need to. I don't have issues most of the time, but I was playing FFXIV:ARR and was doing something where a TON of people were casting skills. It caused a bit of a lag issue. This is a rare instance, but when it does happen I'd rather not have it lag, that's the only reason. Most of the time I'm at 60+ FPS, but during that moment i was at around 25 with a low of 15. Hardly playable. That's the only reason I was considering it. So, thank you for the advice, that's all I really needed to know, basically I'd have to have at least another 660 just to make it worth it, and since I don't, I just won't worry about it.
Many Thanks Friend!