Beno: AvPlan is what the guys offer, flight planning software from the good folk at Ozrunways. Sit and play with it non stop, and waste a few evenings, once you get the hang of it it is very good.
Nomorecatering: I have the suction cap RAM mount and as far as I can see, it ain't ever coming off even if I did high G aerobatics. It is one serious sucker pad (lever operated), and the arm is also super rigid. Mine blocks a wee bit of forward view but it is also a piece of cake to loosen it and flop the Ipad onto the panel for take off and landing.