I'm hoping to get some feedback from the group... I'm trying to decide which mod. of air filters to use on my 912uls - I'm not using an airbox. I'm leaning towards the smaller (R-1060) filters shown on the left in the picture. I believe that these are the filters used on the 912uls powered Kitfoxes first, but then there is the larger RU-1400 (shown on the right) that Kitfox recommends now. Obviously, more surface area is good, but I like the looks & less crowded area with the smaller ones. How have the R-1060's worked out for those of you who use them? Has anyone switched over to the larger ones and noticed any difference in performance?