ON (Optimum Nutrotion) through
www.musclesurf.com. About $34 with shipping for 80 20+ gram servings. Very tasty.
Post workout I drink a serving with water (for quick absorption) and perhaps some malt powder. Before or at other times I might mix something like this in a blender:
ice
skim milk
malt powder
flax meal (for fiber and Omega-3s)
banana (or I keep frozen strawberries, etc)
ON
possibly some honey if I plan on a really hard workout