I have been buying XFX video cards because of the double lifetime warranty. All you have to do is register the card within 30 days of purchase and you have a lifetime warranty and if you sell it to someone else, you can transfer the warranty to them.
Heck, with MSI (and most reputable manufacturers) you don't even have to register. Just keep a copy of the sales receipt in case you need warranty service. MSI replaced a mobo for me once, didn't need the receipt, but I had it if they asked. Of course, since the mobo had a 3 year warranty and hadn't been out for 3 years, they pretty much knew it was still covered (this was during the "bad caps" time, when most manufacturers ended up with a bunch of bad capacitors they'd purchased for a 3rd party which ended up on tons of products). And "lifetime" is a laughable concept in computers. By the time anything is 3 years old, its pretty much outdated and ready for the scrapheap.