That is a great warranty, but I'd still get zipps. Nobody to date has melted a Zipp FC, but there have been melted Enve's. Enve does replace melted rims under warranty, but at 45mph coming up on a 2 mile set of hairpins, I don't even want to have to worry about it.

A large bulk of the population probably doesn't have to worry about those circumstances, but people in in CA or the rockies might care. The OP didn't have a location listed.