You can get an official MV one, which just plugs straight in and is activated via the dash. This one works up only and is non-adjustable. I can't remember what the shift time is set to. It works pretty well at high revs.
HM do a load of different types to suit all budgets, I think you need a wiring adapter though. My mate races with a mid range HM shifter and says it is very good.
I only recently put the official one on my 13 F3 675. On track it makes a difference, I would say on the road, it is more a bit of fun.