Hi,
I just have the Einstein standing side by side with a M4/RT2/50 (EG3/4, EG5, SL, SL2x, COD,) and would say, a EG3/4 would bring you closest to Einstein's channel2 and 1mode3. Definately! SLx and EG5 won't do that job and I'm not quite sure, if an x mod would be the ticket.
Best wishes
ed