I use a GS Era V, 95% of the time, with a 2m Black. I also have the Yaqin, which I plug in to listen to an AT440mlb (Female vocals are sublime using Long plate JJ ax7s). I'm interested in other owners opinions on the MS23b, and which valve/cartridge combo you prefer. Personally I think it's an underrated piece of kit, and well worth the £170 I paid 4 years ago.