I've installed the Annitori QS Pro II on my 06 R1, and it's working fantastically. It has a simple to use bluetooth app and I've been able to select the right duration which perfectly suits my gearbox. I can't rate it highly enough.
I was considering a Dynojet QS but, it doesn't have a bluetooth app that I can change settings on the fly, and in the group of guys I do track days and road riding with, a few of them have had niggling issues with the Dynojet Quickshifters. One guy even blames the Dynojet QS on f-ing his shift forks / gearbox.
So each to their own. For me, the simple fact I can adjust duration with an iPhone/Android app on the fly to suit my individual gearbox's characteristics, and I can set it to bi-directional if I want, sold me on it.