I also liked the SF2 pinball machine as a kid and would still like to own one, but I think it would be too similar to the feel and gameplay of Mario.
They are really quite different machines to play.
SF2 is more "stop start", but has a bunch more shots in the playfield layout. Plus it has a really good wizard mode once you defeat all the characters.
If you can find one cheap enough, i reckon you will enjoy it.
