I searched, but couldn't find any answers, so if this has been covered before, I apologize.

Anyway, I was considering acquiring a power meter such as a Quarq and I was wondering what the life expectancy of such a product is. I would hate to drop $1800 on a product that will only last a couple years. What is a reasonable expectation of the life span that I should expect with moderate use and regular maintenance? 1 year? 2 years? 10 years?

I am just looking for a few ballpark estimates.