Every truck is different, and yes, there is the slight possibility you will end up a lemon.
If that's what you want to hear, there you go! You are going to be hard pressed on this website to find anyone who is not completely satisfied with their truck.
I have had mine since June 05 and LOVE it! It has been on numerous trips between TX and CO as well as daily driving around town and around TX. When it comes to reliability, I have no problem chosing the H2 over either Mercedes for road trips!