If you get an amp with a 2 ohm rating for power, it will easily drive 'stats.That is a very broad and somewhat incorrect statement - depending on the ESL we are talking about (and I am talking about ESL, not ribbon or planar magnetic which are different animals and for which some people lump together with ESLs).
I'll agree on the full range comment - to an extent, but depending on the amplifier you may not need large amounts of power in the bass. Solid state amps, perhaps, some OTL designs, no. There are some other factors here that would determine the right amp as well that are being overlooked.