I'm getting an itch to go Spyder after years of 2 wheeling. We are looking at the 2018 F3 Limited and the 2018 RT Limited. Can't find any F3's in the Tampa area to go see. I like the looks of the F3. Is it easier to change the oil and filters on the F3 than the RT? In pictures, I noticed the F3 has what looks like a gas nozzle on top under the key. Is this for gas or for something else? Since I have lower back issues, would the riding position on the Can Am's be better for the lower back than riding in a cruiser position on a motorcycle? Any advantages of one model over the other? Any advice will be greatly appreciated. Thanks