I personally would buy the eVGA. Mainly because they're very credible and very good about tech suport and things liek that, plus, they have the faster card. Although BFG Tech does have a 24/7 Customer Service, so I don't know. It comes down to performance as both have outstanding customer service should somethign go wrong. Although eVGA has that Step Up program right?
Buy whichever is faster. Faster = Better.
Buy whichever is faster. Faster = Better.