The WP8 are 92DB and dip to 2.2 ohm at 77hz. The Sasha is 91DB and dip pretty low to 1.8 ohm at 92HZ and the Maxx are 91db and dip to 2.9 ohm at 24hz. So the WP8 are the easiest to drive but the Maxx should be easier on an amps since it doesn't dip real low. This is why Lamm works so well on Wilson because it is one of the very few tube amps that can handle low impedance's.
So really if the ML2.1 works great on the Maxx it should work just as good on the Sasha.
