I would highly recommend Agleader!!! They are VERY accurate, user friendly and have good support. As for accuracy-not only are they accurate on the average but possibly more importantly to some of us who use maps to make management decsions they are very accurate point to point. User friendly-they use a logical system to do things like name fields and loads_regions. Some others use numbers. Their menu system is nice too. As for support-they have good phone and web support. If you want used I recommend a PF3000 or the PF Advantage. Agleader, not just the dealer handle the used. BTW, as long as your at it go with mapping. You do not need an expensive reciever ($200-300).