I've done
Vortex
Querkle
Cheesequake
Qrazy Train
Jack the Ripper
The Flav
JillyBean
Agent Orange
SpaceBomb
My Top 3 would be:
Vortex, Flav, Spacebomb
Querkle is also amazing.
My least favorite would be Agent Orange.
If you wanted to grow something that would ensure you had pure dank weed i'd say vortex. Grow one vortex seed and you got yourself some magic! Spacebomb was just like Pacman to me. The mushroom looking trichomes and that sweet candy smell just brought up memories of 80's Pac Man games. Querkle made me feel like I was eating a bowl of sweet cereal while watching cartoons on saturday morning as a kid.
TGA Subcool strains are my favorite strains on earth, and i'll always be growing their gear. I feel comfortable growing just one seed of his gear and if its female I know it is going to wind up dank even if it doesn't meet the expected phenotype. Now i'd never grow Agent Orange or Cheesequake again, but i'll be growing Qrazy Train till the day I die. I can't recommend their genetics any higher for the personal smoker who wants the dankest of weed.
#note Even though I hated Agent Orange, it was EXACTLY as described by Subcool himself. It DID make my bong water smell of oranges (tho I never tasted it

) and the high was most trippy. My problem with it was the high was much much too trippy without a lot of euphoria and it was super potent. Smoking it made me feel like it was a hot day and I dunked my head in ice cold water then whipped it out. It was too shocking to the system for me but it did kill my pain and help my digestion. So even tho I didn't like it it did live up to the description perfectly, which is what makes Subcool gear so great. YOU know what you are getting because when you read the description that IS what you'll see.