I'm shopping for a transport case for taking my P3A on vacation. Some cases require taking the props off to stow the vehicle, others let you keep the props on at the expense of compactness. It seems to me that, in general, you'd want to minimize the number of times you take the props on and off to reduce wear on the threads, but I'm not sure how to quantify that problem. So my question is: should I be considering whether prop removal is required when buying a case? If so, is it better to get a case that requires taking props off or allows you to keep them on? Thanks for the help.