I was just looking at Lancaster's catalog and didn't see the Infiniti dropper in there. Maybe a call to GKF would help.

Anothr rest I have seen but interests me is the Cavalier Avalanche. Quad Ultra is worth a look, but I'd have do do away with that stupid capture bar on top.

As for the Cavalier? I know a guy that shoots one (he's a staff shooter for BowTech) and he won his class at the Harrisburg ASA shoot a couple weeks ago, so the rest must work. He's on this site, known as Matt/Pa. Look him up. Maybe he can expand on it.