Except I've broken 3 of them b/c they're glass. Once they crack, water gets inside and fries the bulb. They don't sell single lights to replace them. I'd find some way to protect them before installing them.
for a non projector Pro Burners from Wal Mart are great.
as for projectors, you can get the projector fogs that are just generic after markets. But pudmunkie also makes brackets to use the Hella 90mm projector as a foglight.