After some more extensive A/B comparison of the TTS-1 and the ForteDXi, through some decent monitors this time, I think the ForteDXi has some better raw sounds, but I really like the ability to get in and tweak the TTS-1 sounds more to my liking.

I also think that either one is worth the $40 price of admission, although having the TTS-1 bundled with Music Creator 5 for that price means that my kid gets a user-friendly DAW-lite as part of that $40 bargain.

Of course, none of this addresses your question. But I would imagine that neither of these soft solutions really compare in sound quality to the Keytron, and the people here that have one do seem to love it.