A lot has to do with what kind of riding you are going to do. The RT is more like your Wing, a plush touring model, and the best for two up riding, due to the poor passenger seating of the F3. If I were going to buy a Spyder, for me, it would be an F3L. But since I ride two up 90% of the time, the RT Limited is more than adequate. One reason I bought the RT Limited was because we got one hell of a deal. We knew nothing about them at the time, the F3 just came out and was an unknown factor. I had shopped price before we went (we owned a Harley Ultra Classic) and I told my wife we weren't spending that much money for another motorcycle. Nyway, this was a week before the 2016 models came out, and the Spyder we bought was a 2015, HEAVILY discounted. Over time, it was the best choice we could make, and the extras that came with it we well worth the extra money, since we were getting such a deal. The RT has the most carrying capacity, ie: sadd;ebags. tour Pac, glove box, and even a trunk up front (lovingly called a Frunk). I didn't think I would like it, but it also has a semiautomatic transmission operate by paddle shifters, and the Limited has a self leveling rear air suspension. When you go tho the dealer, they should have a brochureon the different models that also list what each model has compared to the next. Take the time to read thru that to get a better idea as to what is offered. And be sure to test ride which ever ones you think you might like or even other ones just to get an idea of the difference. If the dealer drags his feet about doing that, find another dealer.
Good luck in your search, I love mine. It took me 5 weeks to quit trying to ride it like a motorcycle, and now after 19,000 miles I'm able to ride it for what it is. One more thing, and right now, and uaually a couple times a year, Can Am offers a deal on the riding school, take the time to do this. It will help you get adjusted to the Spyder.
David