Ok I need some help. I want to get a GPS Navigation system put into my car.I really want to get a GPS put into my car. But I've been debating on which one is the best....In Dash?....Portable?....Laptop? Right now I have the Laptop GPS, and of course it is not touchscreen and you have to carry around this laptop (which is really nice to have because I didn't have one before. :) But lets say you go "Off Route"...the in dash and portable will recaculate and reroute you to tell you where to go, but the laptop does not, you have to do it manually. The laptop also has more options that you can put the time in and it will tell you the time that you get there. Does the Portable and In Dash also do that? At least with these, you don't have to use Mapquest anymore. Which is the best to get, does anyone know. Just need some help in which is best. I guess I thought they all had voice guidance because even my laptop Microsoft Streets and Roads GPS has voice prompts.