My last three purchases have been LionChief Plus and LionChief Plus 2.0. I still run my TMCC engines using my now ancient CAB-1. I never made the investment in the Legacy System for the very fact that Legacy engines tend to be scale... and I have very little interest in scale trains.
I have a pair of LionMaster engines... a NYC J3a and a PRR T1 (which Gunrunner John is TOO familiar with). I find the LionChief engines to be less finicky, and frankly have all the features that I really care about: cruise, good sounds, and Electrocouplers.
As far as 2.0 goes? I'm having a ball with LVC and varying pitches from my phone.
Jon