"well working" ? Sheepshaver has significant compatibility problems with most OS 9 apps, far more than Classic does, particularly with respect to games. And without MMU support, it will never run anything later than 9.0.4.

If I just had 68K software, Basilisk II works reasonably well for that. But if you have PPC software, particularly software from the OS 8 and 9 era, Sheepshaver is very hit-and-miss. I couldn't even get it to install OS 8.6 without a lot of screaming and fiddling. I'm surprised it runs Classilla as well as it does.

I appreciate Sheepshaver for what it is, but as an emulator, it's no good for any serious use and certainly no substitute for Classic or a real, honest-to-Vishnu OS 9 Mac.