Thanks for your response. I've never seen one of these emulators work. Are they really OK, or do they have some operating limitation?
why, you can simply download winuae or fs-uae for that matter and simply run them on your windows, mac (?) or linux. the usage is pretty straightfroward, you only need to get hold of amiga kickstart images, either read them out from your genuine hardware, or buy them form an official distributor like cloanto or simply use aros replacement kickstart which is free and will be usually sufficient for regular amiga (68k) software.
now, what concerns performance, to be a bit more precize about what i wrote, i assumed you want simply run your existing amiga (68k) binaries. in which case emulation on x86 is clearly superior in terms of speed. i was not talking about running ppc code, which you might compile assuming you still have your sources, in which case you would lose the advantage of thebrute force computing power of x86, because ppc emulation is apparently slower than 68k, but you might gain a bit on ppc hardware.
nevertheless if you have your sources at hand you might as well compile native x86/x64 binaries, against amiga api, such as aros x86/x64 and run them natively or hosted on a pc, which again would be the fastest option.
however, this all are probably too dry technical considerations, while most users base their decisions on sort of sentiment, being it whether the genuine amiga or ppc, their choice of operating system, loyalty to a certain fraction or whatever.