I went Combiner Wars.
All three lines are strong but as someone who really has a strong attachment to some of the “scramble city” characters, poseable deluxes of First Aid, Brawl, Skydive etc just wins for me. The combining gimmick is of secondary interest to me; I like that they can combine but I like the fact they’re satisfying on their own *more*.
I did find the line-wide Headmaster gimmick from TR annoying; for example while TR Blurr is a great figure.. why am I being forced to detach his head when I transform him? It’s my only real complaint about the line, though.
POTP is a good line although the Dinobots really didn’t need to be combiner limbs... they got away with it but it weighs the line donwn a little. Easily my highlight of POTP is Beachcomber. My favourite Character & yet another excellent toy.