I have heard various Wadia models but have never done a direct comparision. In my system I am using the Audiomeca Mephisto IIx with Parsifal Encore Sspeakers and Joule Electra pre & amps and the bass is very deep and tight. Actually the bass is quite powerful. The Audiomeca extracts a lot of detail from CDs, you will hear everything. Its a treat for your ears and its not too bad on the eyes either.
Wadia vs. Audiomeca
Specifically in the bass. Going thru the old posts, bass was not great on the early Mephistos, but improved with the IIx. I have a GNSC modded Wadia 850, which has outstanding bass control, power and depth. I have the itch to try something new, and am wondering if I will lose or gain in the lows with a Mephisto II X.