Products that I will not allow myself to run out of EVER: Joiwhip, Batia & Aleeza gel, Jessicurl WDT
. There's quite a few conditioners I like, so I can run out of one and not replace it for a little while. My favorites are Elucence, Kenra moisturizing, and Lacoupe silky smoothing something (orange bottle). I generally have at least 2 of these on hand.
I was not a big fan of the Deva line, but I think I'm in the minority. I haven't tried no-poo or low-poo, so I can't comment on those, but I absolutely HATED OneC. The gels did nothing for me, and SIF was decent but VERY smelly and not worth the price to me.