GPS Navigation Help

Ok, so I know some of you have GPS navigation. I was wondering if anyone can recommend a GOOD portable GPS system for my car? I have to drive all over with my job, so I feel that this will be a beneficial investment.


The problem is that I don't know a thing about GPS and what's a good buy or not. I have been looking around, but I can't tell what's good or better for me.


I will say that I don't want to pay more than $300.00 for one and I do like the touch screen option and I need reliable updated directions.


Mods, please don't move this to the Tech board. I can get more and quicker advice here in the EE and I am hoping to find something by this week, so I won't keep this thread up for a long time. Thanx! :)

Any help would be greatly appreciated!