They are cool, but I have done business with Advanced Auto in the past and their kits are not really durable. The ballast was always going out or the rings would snap off. Its been a year, so unless their kits are more durable now I would be aware. Just more of a headache then anything.

As for the headlamps you can use sillicone or reheat them back up to seal it. The chances of condensation does greatly increase though once you break the stock seal.