So hard to choose on some of these. Of the one just added:
Prowl - Surprisingly found myself voting for the RID guy, sounded a lot like Bell but with a bit more character, I always prefer Bell as Sideswipe anyway, since the voices sound so similar.
Rodimus - Gautier, love Judd too, but Gautier is the voice I hear in my head as Rodimus where as I hear Judd's voice as Hot Rod. Still I love how Paul Dobson sounds so completely different and I don't mind because Rodimus sounds so cool.
Magnus - such talent, they all sound so good, but I went with the original Stack here. But look, Jack Angel's UM is actually going to try and "deal with" their other selves, haha. Forgot that line was in there.
Welles for Unicron.
I really love hearing the similarities between all these voices and how even though each actor has their own spin on the character a certain "type" of voice has been established for each character as a general standard to go by, and it's nice to see that consistancy for the most part over the decades.
I'd like a Bumblebee compare next -
G1, Movie,
TFA, and make sure to add Gilvezan to the Spider-Man pile too.
Oh, and the Ninja Turtles at some point would be really fun ones to compare too, both movie and cartoon voices.
And more female comparisons please, like the X-Women.
I can see this site becoming potentially very big for lots of animation fans in general.