The Elys, even though it's a bit more expensive, won't even come close to the Denon DL-103, in just about every respect. The Denon should work out fine with the MC head amp in the RR2150, although you *may* be better off with something that has a little more output, either in the 1.0mv (MC) or 2.5mv(MM setting) range.

Personally, I would try the DL-103 and see how you like it. That is one *very* impressive cartridge for the money($200.00) overall. You might have to shim the back of the RB200 with a washer or two, to get the VTA right, though.