I used to drive Quad ESL with Mc2275. Overall pretty good combo. If you use a separate preamp, TVC or passive driving the amp section, the amp gets a lot better. I ultimately sold to for midline Naim combo. I also tried VAC phi 110 and I am going to try Jadis 88S. Never heard EAR but Coolhand has more experience than me.
Also look into quad 2 eighty.
Also look into quad 2 eighty.