I'm looking to collect TPBs and comics with OP on the cover. Which ones do you feel have the best artwork on the cover of prime? Where would I find em? Thanks!

 

Finding them - check out comic shops and Amazon, ebay, other such sellers online.

Purely from memory, here's a list of those with Optimus on the cover (I am assuming G1 Op only, but you may have meant Movie/Armada etc as well):

The Best Of Optimus Prime
Beginnings
All Fall Down
Showdown (hardcover edition - cool pic of Optimus' exploded head)
Time Wars (Titan edition)
G1: Prime Directive (Dreamwave ed)

Note - rarely do you get ONLY Prime on the cover, he's normally sharing the limelight with a few of his chums.

 

Awesome. Like many of us, I a have a prime display and I am currently looking to add some artwork.

 

i do that too, even with magazine covers:

 

transformers mtmte profile book tpb 1

 

Best of UK: Prey

Predaking is the centerpiece of the cover, but it has OP in the foreground, as they're in the middle of a battle.

EDIT: Here you go.

 

Really loved that cover! Brings out the awesomeness of Predaking... and it's good to see Prime in that position  

Too bad it doesn't happen like that in the story...