The one thing that bothers me on all these solutions is modern screens.
Without proper v-sync, those old games and demos look like crap.
Without CRT pixel blur, they look blocky and show all the hard edges that the original artists saw smoothly blending together to fake higher resolutions.
I haven't seen a solution yet that really solves the problems.
The best game experience is still a real Amiga and crappy old CRT.
But for productivity software, emulation wins hands down IMHO. Unbelievably fast, high capacity and dirt cheap.
