Well, here's the thing: according to the CurlChemist, polyquats don't cause build-up or any other troubles for curlies. However, some people, like kathymack, experience build-up that is very difficult to remove with a gentle shampoo. I'm one of these people. Basically I get massive build-up from polyquats which leaves my hair feeling weirdly coated. If I have used polyquats and my hair is wet, I can see frizz (and I am not frizz-prone at all). The only solution is using more agressive surfactants than I would like.
Kathymack is much better at explaining all this.
F - LP - HD - NE
Fine, low porosity, high density, normal elasticity
Low poo: Probably getting Burt's Bees Very Volumizing Pomegranate Shampoo
Rinse-out: Looking for a new one
Protein: IAgirl's gelatine treatment
Styling: KCCC (when it's in stock again)
Beauty Is Not a Number