There's been some discussion about these systems in our trade area. I thought I might open it up for the benefit of those not registered yet. Ever since I've seen this and only on video, I've been a little fascinated to be honest. There were some objections, but without having first hand knowledge, I've had to rely on others and their experience. Now I know some of you use them and some don't....so...please tell me why, why not, what type do you use and the pros and cons.