Luckily I have had hands on experience with probably every gps handheld unit out there. I use and test different units almost daily. And in my opinion Garmin GPS's are the best quality made units out there. The sattelites in PA will be the same as anywhere else in the world since they all use the same sattelites. The only different in Aquisition may be the terrain you are in. WAAS won't help with sattelite acquisition, but it is only a ground tracking device that helps the sattelites become more accurate through atmospheric error corrections.