Years of experience, and 5000 bikes later, say marine grade bearing grease works the best for the price. It may not be the most viscous or the manufacturers recommendation, but for as little as $3.99 you can't beat it. Even the dealer cost for Park Tool's bike grease is higher, and oxidizes too fast for fleet applications.
For home mechanics, you can get smaller tubes, but the best deal is a one pound can with a resealable cap, and should last quite a while.