Look at the Conrad Johnson stuff - works great with MLs. I have premier 5 monoblocks (200w of EL34 power in Ultralinear, 100w in triode), that easily power my ML CLS or the Aerius Is I had for a while. Used in the $3-4500 range, I'd think. with NOS tubes, it's hard to find something better IMHO. the BAT stuff tends to be a bit cold in comparison, in my listening.
-Ed
-Ed