I know this is a forum so I hope you don't mind me asking.
Can you give me an overview of all 6 Nvidia brand and what their warrantly and customer service is like? Obviously everything would be biases if I went on their site.
I know that Sapphire is #1 when it come to AMD card though.
No. I can't do that because I don't have experience with all 6 vendors in a short time period. Things change so if I said my experience with xyz vendor was good 3 years ago it might be terrible now.
I think you put too much stock in branding of the card. I bought a sapphire card but it was pretty cheap compared to my alternative choices (within 20 dollars).
Buy a card with a good cooler design at a good price. Otherwise it's usually not worth it to spend tons extra just to get some slightly better chip unless you're very into this hobby from a benchmarking perspective. If you're a gamer, it may make a small fps difference but nothing you could actually perceive.
So example, is I'm going to buy a gtx 980 ti right now, I wait for the aftermarket cooling solutions first. Then I look for nice designs that keep a card cool(I like bigger coolers because I have the space in my case). Then I look for high stock clocks. Then I'll look to ensure its a bigger brand (so I today away from PNY, Zotac, his, these brands aren't poor enough that I would t buy, I just spend the 20-30 extra for the peace of mind).
Then I'll purchase.
Going back from the beginning though, I usually won't even step through this process unless it's a decent deal on the card overall to begin with or if there is a slick deal. But I wouldn't buy a lightning/classified card usually ever since the price difference is never worth the small performance bump. It's usually gaming forums who care about brand like neogaf or something.