I just ordered a P3A online and should hopefully be getting it next week. I was planning on buying an extra battery and some lens filters for the camera. I was wondering what is a good case to get without breaking the bank? Do they sell cases where you can leave the props on the P3A while its in the case? I was also looking at getting a set of carbon fiber props to use, is there any advantage from using those over the stock props? If they don't make a case where the props can be left on, was just wondering if its bad for the props to keep taken them off and putting them back on? Thanks!