There's also amithlon I guess, which is significantly faster than any other amiga emulator out there (especially with fpu performance). It's also void of the input lag "problem".
Im still a bit unclear about the slash character "issue". Every single keyboard I have has both forward and back slash keys. Backslash also has same character as amiga for shift+backslash (not sure what a person would call that character though).
Most of my coding is done under emulation, and keys have never even crossed my mind. Theyre just there.