I love my berg but for me the 570 is too tall, too heavy and too much power for some of the tight nasty rocky rooty muddy trails of New England. I am old and not strong anymore and I use this bike for "dual sporting" but tend to avoid the real technical stuff. Since I am thinking about getting a lighter bike and running some enduros next season, I figured what the hell I might as well get a benchmark for my endurance and ability by running one on my 570. I decided to hit the final NETRA enduro of the season known as the Black & Blue. My goal was to not hour out before gas (half way). Well, I made it the whole way without houring out. Ended up finishing 24th out of 34 C riders. Felt good running my first race since 1978. I ran a Rekluse EXP clutch for the first time ever and I am sure that is the reason I made it through the whole course.