Budget card help...

looking for a budget card for a budget build, two cards in mind were the 5670 and 6670. My main question is simply is the extra $15 worth it for the 6670? The 5670 seems to have some great reviews as a budget card on the net but I wanted to get some of your opinions before I decide, also if you have better suggestions send em my way trying to go max $100 on GPU.

Recertified 460 off newegg for $100 FTW.

The only one in stock is the Sparkle brand, does this brand carry a good rep?