I am thinking about getting myself a GPS navigation system for my pick up truck. I looked at some of them on the net and read some reviews and I'm still confused. I'm kind of leaning towards a Tom Tom One XL S unit, (plus they have a $100 rebate) or, is there one that you use or think is better? I don't need one with all bells and whistles on it just a good basic unit that is easy to use and easy to read.