My top 3:

#1. G1 Ultra Magnus - G1 because thats the only magnus I own. Whilst I agree that he isn't that cool in the cartoon, he goes alright in the marvel comic. But as a kid he was my favourite and to this day still is.

#2. Masterpiece Grimlock - Everyone loves grimlock, but he is one of my standout characters. Can't really explain why.

And my #3 I actually have a photo of:



Alternators Silverstreak - Best car I ever owned. Spent the GDP of a small country on engine and suspension mods so it went like a rocket on rails too. Unfortunately it came to grizzly high speed and premature end.