I've returned to using cones in moderation and I use a very mild shampoo which is specifically for colored hair, since I dye my hair and most important: I dilute the shampoo like ShubhoR does (earlier in this thread).

The poo contains sulfates but it is a gentle, moisturizing shampoo and diluting it makes it even gentler. I've tried Lo Poo and I just don't like the results as well; my scalp feels greasy afterward. Sometimes I will use Deva NoPoo and skip washing altogether and that's fine too, but I usually just use the shampoo for dyed hair.

You really need to experiment to make the decision about what works best for your hair. Have fun!
2/c-3a Coarse hair med. density.
Protein sensitive but can use occasionally
Highly porous. Color over grey.
Best 1st day method: Ice Queen!
Stylers: Mix Curls in a Bottle into everything for shine. Terrible pj
Sometimes try roller sets or use a curling brush - classic glamor.
Every day is a gift