Hi, I'm picking up my 2015 F800GS Adventure later this week. It's first BMW and it's been 35 years since I had my last bike! I'd like to put a Vario top box on it and wondering is there only 1 model of BMW top box that will fit or are there several models that will work? If one of you experienced GS'ers can point me in the right direction that would be great. As the Vario's are expensive new, sources for 2nd hand or suggestions for alternative lower profile top boxes would be welcome too. Thanks