I like gen 1, I like gen 2. They're both nice in their own ways, analog gauges vs more power etc. For the ZD8 and ZN8, there's some very cool gen2 specific parts coming out and I'm glad the platforms are still growing.
I'll stick with my gen 1 for a very very simple reason... Toyota killed off Hot Lava at the end of the '17MY and it's my favorite color