ORIGINAL: BF1947
They aren't all that expensive. I've always found that the BEST way to determine which is BEST is to try them both and draw your own conclusions.
Hopefully you are not saying quickspins are inexpensive, because for 35 quickspin vanes, its a fat $20. And ya, I tried them out, and will personally say I don't endorse the product. One hit from another arrow and that vane is swiss cheese.. There are many more vane and fletching manufacturers out there that give you better results with a better price tag as well.