I have, or had, Little Business, and it never rebloomed for me. Not sure if I still have it or not though, as it is at the other house. It's probably dead due to neglect. I didn't bring it with me when I moved, because it didn't do all that great for me. Maybe it didn't like all the snow every year. That was in zone 5a. I've heard great things about it though, so maybe it likes it a little bit warmer?
I also have Irish Elf, thanks to a friend sharing it with me, and it is adorable!! I need to move it to a better spot, where it gets more sun, but I adore it. It has the cutest little blooms! I think it would do so much better if it wasn't in as much shade as it is in. Another one that I had no idea that could bloom like Stella!
I just looked up Mardi Gras Parade, and it is beautiful! If it blooms as good as Stella does, I'll have to add that one to my ever growing list!