actually ,there is a difference but you'll need to get some stick time on both types of aircraft. I had flown the slick fiber fuse and composite wing and there are differences in wind penertration and total airfoil efficiency verses the covered aircraft. of course the drag is more noticable when the covering comes loose. but on the other end of the spectrum, a film covered thermal plane flies really well at slow speeds verses the other for speed. in the end though it just depends on what you're looking for...