It's funny you mention that. I have a couple of older non-optical mice still in use that still work great. One going back to at least 1997. I have some even older serial mice that I believe still work too though they haven't been used in forever. On the other hand, I've had newer brand name mice start failing in a matter of months. Even the expensive ones don't seem to do much better.
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I'd happily spend more money for more quality. But all I want is a corded mouse with two buttons and a scroll wheel. More money just buys more features, not better quality. So lame.