My best is not that great. I have a pismo that has OS 9 on it (400mhz/512MB RAM/20GB/DVD). It is nothing special. Eventually I would love to have one of the last G4 powerbooks that could boot OS 9 natively, which I believe was 1Ghz. They are still rather expensive right now.

For running classic I do have my Mac Mini G4 but it is just not the same.