Hard to get a real good idea as the rear shocks stop you from doing too much.
From brand new the rear shocks stopped you from doing too much
I am probably not in love with the C,N ... for me T onwards with all the goodies such as multi tool and original turn signals etc would be most desirable. The T had a lot more good time enduro stuff on it, quick change rear wheel and axle pulls, good stuff.
The PE400T motor was ahead of the RM400T, so I think this is the most desirable PE. The one I lusted after the most.