Good old Phil waterproof grease is the best. It's cheap (enough), lasts a good long time, isn't too stiff, and bike shops have been using it for decades. It's the green stuff in a squeeze tube, available at every known bike shop in the world.
For those who advocate marine grease-it is too d@mn thick!!!! I have used automotive molybdenum axle grease on the BB of a beater before (cups were scored, and it wasn't worth replacing them), but even that was quite thick for cycling use.
Synthetic greases are just another method of getting cyclists to waste their money. Maybe Patani could tell the difference, but I sure can't.