For weapons or for anything?
For weapons, I'm not that worried about the warranty, although I do stick to high quality products. Customer service is important however as no matter when it brakes, I want it fixed.
For everything else, it depends. The warranty for a lot of things, like cars, is important, but for other things, like a ten year old refrigerator, I'm more concerned about customer service, understanding that I'm paying for the fix...just come out and fix it.