I finally had a chance to load the new maps into the Jensen and drive the RV for about 30 miles to get a NJ inspection sticker. Did not notice much difference and it is still a pain to enter a destination address. I really wish the unit would allow you to enter a field entirely before starting a search as it is just not fast enough to take the current "google like" approach. Anyway, the one thing I did notice was that several times during the drive the voice navigation would instruct me to make a turn which was opposite what the map was indicating. Since this my local neighborhood, that was not a issue as I knew where I was going. However, in unfamiliar territory and with a 32' truck, that could be a bit of a problem.
I did notice that the GPS antenna was mounted on the dash just in front of the driver. Is it possible that depending on the direction the RV is traveling that the GPS may not know where it is because the bunk over the cab is blocking the GPS signal?
One other note. I was finally able to get the voice guidance to work by setting the master volume up close to 100 however the voice guidance quit working on both the up and down trips and I had to power off the radio to get it back to working. Additionally, on the trip back when I did this the guidance volume was very low even though the Master setting was still at near 100. Problem for another day I guess......