For under 20K (or over 20K if you like) you could get a very respectable YBA set-up. Ask your Avalon dealer if he has heard them with YBA amps. If you want to demo them before you buy (and you should) the North American distributor is very good about lending equipment to dealers for customers to demo. Let the speakers get nicely run in before you start in-home demos though.
Good luck!
Good luck!