I think I just have too many trains, but the new sound systems has made me re-think buying trains that are 10 years old.
I do not buy Kline trains with TMCC any more... the electronics are just too unstable.
PROTO1 and PROTO 2 5 volts are on the same issue line.
I think I'm at the point now where I am looking for a certain few remakes with the latest Legacy updates and I'm done buying....