I guess it'd have to be the Cyberverse line for me. I've never been a fan of small and overly simplistic TFs. I actually hated the minicons back during Armada and Energon(except for the ones with weapon mode alts or that combined into weapons). Small, simple TFs are just unsatisfying to transform. But being a fan of the Prime figs, I started looking at pics and stuff of the Cyberverse stuff. Convinced myself one day to pick up Commander Optimus(not hard given the price increases on the deluxes). The very next day I was back at WM grabbing up some legion figs, Cliffjumper, Evac, and a couple Vehicons. Been hooked on'em ever since. Dunno, guess my views on the small figs must've changed or something.