The Camping World in the Denver area has this incredible salesperson that seems to have an extensive knowledge about all things! It is amusing to see the line of people 5,6 or more snaking around the store following this guy, each waiting for their turn to ask their all important questions....heck, if you follow along, you can learn a multitude of things about all sorts of stuff related to camping and RVing. Having a guy like that is worth the membership fee. He says," here is the top of the line product, it does this and this. Here is the low end, it will do this and this, I prefer this product for the money, it does this and this." so you really get all the options and he tells you how to use it, how to hook it up and what to watch for etc. etc.