One of the oldest and best MS-DOS C64 emulators, its emulation is adequate, graphically its very good, except it does have problems with a few titles such as Mayhem in Monsterland where the screen corrupts. The sound emulation is superb for its time.
The interface is very good and is easy to use. This emulator used to compete favourably with the likes of PC64. Miha Peternel the programmer of C64s was developing the software until 2007ish. Now it seems dormant.