As with the previous polls, we're just looking at G1 and just with what was your personal favourite toy as a child. Mine is Defensor. Devastator was a pretty easy gestalt set to complete being the cheapest to complete (thanks to not having any expensive boxed figures; the other being Monstructor). But Defensor was definitely my favourite. It's the most aesthetically pleasing to me and I've always loved how it has a self-contained head; arguably the first G1 gestalt to have a self contained gestalt robot part. Devastator's feet are formed from Scrapper and Mixmaster's vehicle parts, which is cool in itself, but they're more like incidental gestalt parts. Defensor's was the first explicitly purpose-made part made for a gestalt which was contained in the robot rather than being a detachable accessory.

As an adult, Lio Kaiser is my favourite G1 toy (even though I don't own one), but it's not a toy that I was exposed to when I was a kid, so I have no childhood memories or impressions of this toy (so it doesn't count for me).

Due to the 15 option poll limit, all the Micromaster gestalts have been lumped into one option, and there's no separate option for King Poseidon (which, toywise, is virtually identical to Piranacon anyway, and since this poll is exclusively concerned with toys, we can consider them as being one and the same)