Are your lenses oxidized? Wet sanding them works great, but glass shops also offer that service and they clear cote them after. If its just bulb.....Remember that if you spring for a brighter bulb like a nighthawk or something, they just burn out faster.
I use Sylvania Xtravision. Middle of road price wise....they seem good and dont burn out as fast as others I have tried.

 

Thanks! I'll buff it out this weekend and see how the light output is

 

If you do wet sand.....you need to clear cote them. If it has noticeable oxidation those headlight restore kits are useless.