I have read with a lot of interest the thoughts, experiences and problems some of you have been having with the new P4. A significant number of you have been returning them. So glad I waited. A combination of manufacturing and soft/firmware problems seem to have plagued this release. On paper it sounded so good. Some of the new features like collision avoidance and the tracker mode made it very tempting. Extended battery life, which looks to be a false claim. So thank you for publishing your views on the new model. They have helped me, and probably others, know we made the right choice in waiting. No doubt the P4A, or whatever, will be out soon.