I'm in the same boat, so to speak, I'm debating on what kind, how many and where best to locate them. So far I'm leaning towards the titelock brand but still looking. Aint none of them cheap. I've never done any pushing but I want to setup for it and give it a try. I'm still trying to decide about a GPS too. Want to make sure that I get something that will work for me at the cheapest price.