> All I can say is "Caveat Emptor".  If it sounds too good to be true,
> it probably is.

At least with the Akoff program, you can download the (non-saving) demo
and try it out.  My impression is that it is aimed at composers rather
than people who want to convert recorded performances into scores.

Piano or guitar seem to be the instruments the program was designed for.

Regards
Don Cox