Frankly, my friend, I would just keep what I currently own - two systems, neither having an audio component newer than 10 years old. But they both consistently satisfy.
As you get older, you really do realize that the never ending chase for audio nirvana is a dead-end. Better to be satisfied with what you have and just enjoy the music.
If I won the lottery, I would much prefer to set up a "last resort" haven for homeless dogs and cats, to make their lives on this earth better. I tell you, sitting listening to music with a dog curled up at your side is worth more than owning any of the newest high-end audio equipment.
Sorry if this reply doesn't follow the intent of your question.