Yeah, that was one of the problems that is kind of disheartening with the HarmonyM. I did a little research online and found that a big negative from HarmonyM users was that sometimes it doesn't "track" right, such as when introducing chords that the HarmonyM apparently can't interpret and handle correctly and throws the harmony out of whack.
I'm glad I didn't rush out right away and get one. If others are satisfied with it that's great. But if I plunck down $300 for a product I expect it to work "correctly" - not just some of the time or most of the time but ALL of the time.

Call me finicky if you want but I call it being practical.

NEXT!

Other products on the near horizon will hopefully be soon forthcoming.

Something that won't cost an arm and a leg would be nice too.

Not that the HarmonyM does of course. But it seems the only way to get an acceptable VH sound you need to go with the high-end TC-Helicon or the Eventide products. OTOH, Digitech didn't impress me at all with its latest Vocalist Live Pro. Maybe some of Digitech's other products would be more suitable to me perhaps.
Best,
Mike