EVGA has long been considered the "best" Nvidia card brand but it varies. MSI (my preference), Gigabyte, and Asus are typically reviewed the well. PNY and Zotac aren't as popular but still receive decent reviews. If you're not concerned about overclocking just find one that runs fairly cool and quiet. Also how it looks might play a factor. I love the way MSI cards have been looking as of late.
Also be sure to review each's warranty and RMA policy.