I usually use IAGirl's PT recipe for my weekly PT- I sit under heat for about 30 minutes, then follow with a DT. In a pinch I use Aphogee 2 step (IAGirl's recipe was designed to give very similar results to Aphogee, which has a very strong smell).

Prior to trying IAGirl's PT, I tried (in order from what I felt was weakest to strongest)
GVP Reconstructing Conditioner
Giovanni Hair Reconstructor
CJ Repair Me

I now use these other products as my RO once or twice a week (I blend with a regular moisturizing conditioner to get my protein and moisture in one step- I normally mix with GFTN). I also added ION Effective Care in the protein RO rotation. Typically fine hair can handle (and likes) lots of protein.

Modified CG since 11/5/11
CLEANSE: CJ Daily Fix, DevaCare No-Poo, CHS Treatment Shampoo
RO: SS Caitlin's Conditioner, CJ Beauticurls Strengthening
LI: SS Repairing Protein Treatment, CHS Silk Leave-In
STYLE: Re:Coil, Curl Keeper, Deva Ultra Defining Gel, Curls Rock Amplifier,Sweet Curls Elixirs Okra Gel and Hard Hold Gel, SS Curl Enhancing Jelly and Firm Hold Gel