I will have my X5 not earlier than april, so I am just gettin in the mood.... Question that I have preparin myself for the ultimat driving eX5perience are: - should I use a polymer wax - should I use rainX (I like it alot, but the windows have to be tilted in a certain angle to have it workin at lower speeds...) - Is there a nice retrofitable videoscreen where i can connect my Clarion nav system to (leaving the original radio in tact)