They're addicting, let me warn you.
Also- they're absolutely awesome when they work properly, but sooner or later they'll be some bumps in the road and you'll have some trouble.
In other words, they spoil us, and when they don't work 100% correctly- some guys whine and complain. I ran 2 of them over the last couple seasons, there's nothing better… when they work right, haha. When they don't, it's a pita but in the grand scheme of things, it's not a big deal.