Holy old thread, batman.
A good controlled fermentation is what I use now for head retention. I've learned a lot in the last year since this OP.
Sure, stuff like torrified wheat helps with head retention, but I get good head retention without as well. I've switched to oxygenating with a stone; that makes a big difference. Proteins that hold foam together into a stable head are kinda one use only. So stuff like aerating by shaking just eats into available head retention proteins down the line. That and a good temp controlled fermentation have fixed all my head retention woes.