Theres a lot of quality products that can be used for pct purposes, weather or not it's the smartest idea is a different story
AI: Inhibit-E (cheap and powerful) and as mentioned tons of ppl have great success with Form products
Test Boosters: Testopro and Phyto Test are some of the best IMO
Then theres always products like Sustain Alpha which I'd consider a mixture of everything, alittle test boost, alittle Anti-E properties....Stoked! could also be used for this with great success
HGH products: i've seen some ppl that throw in an hgh product into pct and had some good success with them such as HGHPRO, HGHUP, I-GH-1
Anti-C: Supress C, Lean FX are some that get good reviews...these products may or may not be needed from what i've seen, some ppl swear by them and others say they may not be needed
Creatine: not always for recovery but to keep gains from the cycle...the only creatine i use is Universal Storm...cheap and effective