Jaydisc, I extended the poll for you to 30 days.

I voted for Astrotrain, Tankor would get my second vote and then Blitzwing.

Astrotrain had some nice modernisations (bullet train over locomotive), a fun transformation, a toy-colour (Classics) or cartoon-colour (Henkei) version, the feel of the original robot with more poseability.

The homage elements of each of these three toys are all very good though, but when it comes to making a decision: Astrotrain is the one I play with the most.