Being given 2 custom systems but what to ask for?

I am a total newbie who is in WAY over her head. I am going to receive some non-cash compensation as part of a huge settlement. I thought that I'd request some nice audio equipment and am just realizing that this doesn't mean buying the most expensive thing at Big Box store. I want one stereo system for playing cassettes, albums, and CDs and one 7.1 surround sound system for playing back DVDs. I was hoping that people could respond with systems of each kind in price echelons of under $10k, under $25k, and under $50k. The catch? I need to FULLY specify each system, and it's the details like cables, line conditioner, stands, etc, that lost me.

Due to post limits, please ask me clarifying questions as needed.

Thank you!