I have both an apple ][, a commodore 64, and a performa 5400 down in my basement. I don't have any apps on the ][, so I never use it but it works fine except that every once in a while something causes it to shut down.
The commodore is bomb, I learned to use a cli from it - and the performa I used to play games on when I was four or five.
But my iMac is a lot better then any of those :^)