So many different companies are making their own 660 Ti graphics card, including Gainward, Galaxy, Palit, PNY, Colorful, Gigabyte, Acer, ASUS, EVGA, KFA2, Club 3D, MSI, Zotac. That's A LOT of different choices., and with the card costing relatively $300, I'd like to make the best purchase. Could others offer tips, suggestions, etc. on how to choose from which company to purchase from? Thank you.
All depends on what you're looking for, here's some of the difference that can be found between venders:
Type of Cooler used
Sometimes alterations to the PCB
Included Accessories / Adapters
Factory overclock (Core/memory frequency)
So you have to decide what is important to you and then try and narrow down the possible list, then when you have just a few choices I'd recommend looking at some reviews of the card(s) to help make your decision.