Not personal experience, but the experience of some fellow riders at my club. One had spokes breaking repeated on his wheel, he took them back to the LBS, and had to wait a month for a replacement spoke to be sent to fix it (as the spokes are proprietary). Another friend had rim cracking at the eyelets after just 2 years. Mavic doesn't have customer service that talks to customers in the USA, you have to go through where you sold them. Now imagine you bought them used and they broke? You'd be looking at probably paying out what you paid for them to be fixed.

What is your budget?