Your findings on the amps are no surprise to me at all. I own both the EX-M7 and the EX-B7s and the B7's are an upgrade which should not be a surprise. It is not however a large enough one that you need to run out and buy a pair unless you find a good deal. I find the Kinki's to be a match with a good 6SN7 based preamp. I've used both the Don Sachs and two different Supratek models.
which of these four amps for Wharfedale Elysian 4's?
just landed these speakers on a whim and have some local used amps available right now, tight on budget due to cost of speakers and can upgrade to a higher end amp later .....specs show these as 4ohm 92db sensitivity,
available to me at the moment
Yamaha A-S2200
Ayre V-5xe
Parasound A21+
Kinki EX-M7
which of those four might work best to start?
please and thanks