Heck, you are retired...so get out and go to some audio shows where you can see and compare a lot of gear in one place and then begin to develop a feel for the type of sound you will enjoy most in your home audio system with the types of music you listen to. There are many excellent systems posted on this site that achieve their qualities differently based on the preferences of the owner.
Price point is not as much a differentiator as achieving the sonic qualities you value most. Choices are many such as large SS amps and dynamic speakers, horns with lower-powered amps, single driver speakers, many varieties of tubed amps and preamps, digital vs. analog, and more. You need to develop a feel for what sonic qualities you value most and then consider gear that will get you there. How do you want to interface with your music...through a computer, vinyl, CD, or a combination. Don't neglect thinking about things like ergonomics such as large or small, easy or fidgety, warm-up time or leave it on all the time, and heat generated. Go to some shows, check out some gear, ask some questions here and have fun.