Well, here's my thoughts
I've had a SEB. Had trouble adjusting the tension to the gun weight. It was always jerky and never consistent. I sold it. Haven't owned a Farley, but have played with them. I think they are probably great if you wanna spend that kind of money. I now have a J and J ($800) and really like it. But I also bought an el cheapo Caldwell Fire Control Joystick rest and REALLY like it. I must admit, you might get laughed at when you go to a match... but the rest has a nice joystick action to it and you can get one for $190. If I had it all to do over again, I would just buy a Fire Control and be happy and a little richer. Gives you another $600 to spend on the other good stuff.