I know this thread is getting away from the initial topic, but I have to say that it is so cool that when I report a problem w/nTrack (I recently moved to a new PC and some files were acting weird), that Flavio himself replied -- rather quickly, too. I doubt you'd get that w/many other softwares.
Other than that simple problem, nTrack has worked very well for me, and I can't get over the low, low price tag. A friend owns one of the other progams and constantly has problems because it's so confusing to use -- and he is questioning the price tag now.
I'm sure nTrack is limited in some ways, but I haven't discovered them yet.
Just my 2 cents.
G