I think we all know bigger/pricier does not always mean "better"!
I bet it sounds ropey. Overwhelms you with the volume of air being pushed, rather than timbre, delicacy, air & decay etc.
I mean, £700k would surely buy you some very good musicians! Just keep 'em in latex, locked in a box till you need 'em 
DT
My dream system? Dunno really. Jem Blue Pearl TT, VAC Phi 70 Mono's & Acapella Excaliburs have the required wow/bling factor, and would probably make sweet music! Rampant specualtion though. Haven't heard any of these in action 