personally, it's still not enough for my peace of mind. I want a good 180 miles before the reserve comes on, and an additional 40 miles after that. that way i can wander off the beaten path for longer periods of time. with the Monster, I have to stay closer to civilization. I've wanted to do a road trip to Fairbanks from South Louisiana, but I've heard that gas stations are so spread out up there that the Monster is probably a bad idea. I'll have to get another bike for that trip.
If I were going that far out, I would REALLY want to carry a 5 gallon NATO jerry can with me... I'd also want to put a luggage rack on, and the ventura 30lb limit one is just not good enough for a 32lb 5 gallon filled can. I'm planning to get my monster "toured out" so that I can carry a tent, sleeping bag, extra fuel, and still have 2 side bags for clothes and essentials. I have a design for a universal tube fitting that will screw in where the high exhaust mounts on the 796. It's going to function as passenger grab handles when nothing is in them, but have fittings for tubes so I can weld up a luggage rack that quick thumb screws in and out. I love riding the thing so much! I'll post pictures if I ever get enough spare cash to do it.
By looking at the "fuelly" figures, I would say the difference is roughly 10%.
I don't trust fuelly very much at all, specifically on motorcycles. On the highway, my monster gets 49-51mpg, and fuelly would have you think that's not possible. In town, I've never gotten lower than 44mpg, but fuelly shows guys getting 27mpg!? how is that possible other than being a hooligan and reporting your hooligan milage to fuelly? I never figure my hooligan milage into normal riding... I did a nice stint off-road this summer through forest trails on private land... handles surprisingly well... still got more than 35mpg off road, but I put more miles on last year than all 4 2013 models reported to fuelly in total.