Always a 'challenging' question, and never dull or uninteresting reading the responses. Usually the divide is fairly passionate; somewhat resembling politics. I'll have to chime in similarly to Mrs. ABQSpyder, although I am the male driver, and am responding with my missus' perspective. We test rode both the RTL and F3L, 2017 models. Before starting out, I was fairly sure we would probably take home the RTL. However, we wound up buying the F3L. I just could not get comfortable in the RT seat; still can't - the RT ergos bother my hips. The F3 ergos work for me. My wife completely surprised me when she, too, voted for the F3L. She liked the "smaller" size and feel. She liked that she seemed to sit a bit more above me and look over my head, rather than around my ears. She found/still finds the stock pillion seat very comfortable. I do not like the BRP stock driver seat, and have just bought a new Ultimate, which will replace both seats; I hope she'll be as happy. It is important to state that we ride two-up 95% of the time, and usually do day trips of anywhere from 2 to 6 hours, usually with a couple of rest stops or a lunch break. Using an Airhawk pad until now, I have been able to go 3 hours at a stretch; before the pad, 90 minutes was tops for me, but my wife never had an issue with her rear seat. I sometimes feel the new F3L gets a bit of a bad rap from some owners of RT's who really are thinking more of older F3 models. You really need to consider that the 2017 F3L has automatically adjusted rear suspension that wasn't present before. But, most of all, you really need to find the answer to your question by doing your own test ride comparisons. Go out on both models, together; ride for as long as you can on the same roads, then compare notes. Make a choice based on the feeling in your own butts, not in the experiences of others. Just be aware that opinions on the merits are divided. I am only speaking up here to redress the balance slightly on behalf of the F3 lovers. I respect those who favour the RT. Both opinions are valid; the truly right one is what you decide for yourself after an honest, comparative assessment. Go ride; let your butts give you the best answer.