What equipment would you recommend?

A friend has asked for some advice. His mother is seeking to purchase a good, but simple to use A/V system. Her budget is $20K.

I have not talked with her personally, but will assume she wants a high definition television. As for the rest of the system I would like to hear about both 2-channel and multi-channel options.

More assumptions. Include tuner as an option. Turntable not required. She lives in high-rise condominium and I will assume she does not want the system to be a nuisance to her neighbors.

I get the impression she would like a "lifestyle" type system of matching, if not integrated components.

Courteous and sincere replies are greatly appreciated. God bless.