Liquid cooling vs. air cooling lifetime?

im getting a gaming computer and chances are it's going to be on for a VERY long time i want it cool but functional for many years so should i get a nice high end air cooler for my cpu which is an amd phenom II 955 BE it will be overclocked by 5-10% and a standard fan on the radeon 6950 or should i get both CPU and GPU liquid cooled with 2 120mm fans i dont care at all about noise i just want i cool system that looks nice