For me it would be Magnepan 20.1s with a sub to cover the subterranean region. I would audition a few such as the new Revel or REL Studio, or their new Stampede, etc. Then I would audition some high quality amps such as the new Rowland monobloc digital amplifiers, Edge, Atmashpere with auto-transformer, etc to feed the Maggies. On the front end, I would would go for the new Ed Meitner DCC2 or 6 Dac or, perhaps the Exemplar modded Denon since my primary music format is CD (just don't think the others will make it). Now the listening room, this will be somewhat conservative. Just a rectangle, about 15'X25' will do fine.