I have the Givi 46L top case installed. I want to get the Givi 56L top case because I want to be able to pack 2 helmets +. Is there any reason I "shouldn't" go for the bigger case? Keep in mind that the helmets I want to fit are both modular, so by default, they're a bit larger than a standard helmet. So far I haven't run into any problems with the 46L at speed (140mph give or take). I know it might look funny, but so what. I can take it off when I feel self conscious.
Pros/Cons?