Good balance of compatibility and performance (but not perfect).
Includes "Fast Copper" hack, to speed up certain games that might benefit from it. Might cause glitches elsewhere!
Cycle accurate for 68000 mode only, stripped down CPU emulation for other models. Models higher than 020 (030-040) don't use proper CPU cycles, they are just faked using 020 (they still show up as the selected model under emulation, of course). No 68060 support.
Includes JIT for ARM (not on MacOS).
Recommended for slower hardware (up to RPI4), or if you want JIT for ARM.