After 4,000 miles on a 2016...
There is only one thing, in my opinion, the F6C does markedly better than the B. Heat management. I suppose it's inevitable that the thing which does such a fantastic job protecting you from the wind, the fairing, also serves as a heat sink, but c'est la vie. It's not a serious issue, especially on a highway at speed, but any traffic riding and it is definitely noticeable. A little furnace-like in San Antonio. I'll take it, because everything else it does infinitely better for my riding style, body type, and needs.
But if you get a chance to ride an F6C in some heat, check it out. It's almost like being on an electric bike. The fact that there was zero heat to the rider was one of my favorite things about that bike.
I already love the B so much, I can only imagine how much better it's going to get when the weather cools a little.
Jason
ACTUALLY, my experience is that
The F6C is a far superior machine in almost every way--not just with the heat. It corners, brakes better. The lighter weight makes it a lot easier to move around and the 5 MPG more doesn't hurt. I bought a Boulevard Windscreen and it is just as effective as the stock shield and fairing on the B. Add my MRA spoiler and I got a ton of wind protection with a clean, open look up front. It is a true "Power Cruiser" and the B is a "Heavy Weight Tour Machine"
Where the B has the definite advantage is long stretches of riding where comfort is needed. Another area is aftermarket support. The C has NO---and I mean ZERO AFTERMARKET SUPPORT from anybody except Corbin. You can't get average stuff such as bars (cables are custom cut), exhaust, ANYTHING!!!!---Wanted to get Avon pegs to match the grips and they don't even make pegs to fit the C.
Not really fair to compare as they are 2 different bikes, but I never noticed heat issues on the F6B, either.