I use Deva nearly exclusively, and I would say I have roughly the same type of texture/porosity that you have. I have recently tried several CJ product which really turned my hair to mush - given how highly reviewed they generally are I was really surprised. Makes me think I have some protein sensitivity as I believe the CJ products have a LOT of protein.

I haven't dug into the details yet but maybe it's the amount and/or type of protein that you may have sensitivity to? What I've seen on the boards is some people can have reactions to only certain proteins, while others their hair handles just fine.
CG since September 2011

Type: 2c/3a
Texture: medium-ish
Porosity: normal to low
Density: THICK!

Co-wash: OC
Cond/Leave-in: OC
Style: MOP Curl Defining Cream, Angel, Garnier Pure Clean Gel
SOTC: MOP Glisten pomade, Aveda Humectant Pomade

Looking for: good curl definition, clumping and no frizz