Unless they changed the formulation again, GFTN doesn't have dimethicone. It does have amodimethicone, which is a non-water soluble cone but doesn't build up the way dimethicone does. I've never used the Organix products, so I can't speak to the ingredients.
No two heads of hair are the same and for every person who gets amazing hair from CG there's someone else with amazing hair who doesn't follow CG. It all comes down to learning what does and doesn't work for your hair.

3a/f/iii
Modified CG since 11/5/11
CLEANSE: VO5 Vanilla Mint Tea Clarifying, DevaCare No-Poo, CHS Treatment Shampoo
RO: DevaCare One Condition, SS Caitlin's Conditioner, Mop Top Daily Conditioner
LI: SS Repairing Protein Treatment, CHS Silk Leave-In
STYLE: Re:Coil, Curl Keeper, Deva Ultra Defining Gel, Curls Rock Amplifier and Strong Hold Mousse, Sweet Curls Elixirs Okra Gel and Hard Hold Gel, SS Curl Enhancing Jelly and Firm Hold Gel