I liked the G1 revoltech, I wish they had finer detents in their ratchets and that they had done more, largely because I really liked that visual style.

I personally don't get art vinyl.

I loved Robot Heroes, wish there were more.
I have some of the Japanese scf figures that are larger to go with the robot heroes.
I liked Titanium but not super fussed.

If I had the budget and space Id have ultimetal prime and megs, but I don't have either.

I prefer toys that transform generally, the others are more whimsical purchases.