Just so you know, Meitner is currently running an upgrade program for existing MA3 owners so if go for the demo unit make sure you have all the paperwork. The upgrade is an additional $3,500 which includes big overhauls to the both the input and analog stages amongst other changes.
I moved to the MA3 from a PS Audio DirectStream MkI because as others have stated the MA3 finds the right balance between detail and musicality. Ted at PSA does great work but the direction he was taking sonically with each FPGA upgrade was just not my cup of tea. Having said that the MKII is on sale at the moment for about $5,600 USD.
Good luck.