I am a firm believer in Synthetic oils and grease. Every moving part of my bike, except the chain, has Mobile 1, synthetic grease or Super Lube synthetic grease. All of my ball bearings have Mobil 1 and the all the non ball bearing parts like the brake post have Super Lube. What I use is pictured below.

[url=http://www.flickr.com/photos/83684388@N06/7862065738/]Synthetic Grease