I have both and can’t notice any difference. The next are on my anthem and I have six-c on my trance, chameleon and nomad. The anthem is for xc and the chameleon, trance and nomad are all used for trail, downhill and jumping. I wouldn’t put the next on a bike I used for dh or jumping as they are not designed for it but I wouldn’t hesitate to put the six-c on any sort of bike. For me the six-c is the perfect bar combiningthe right shape, light weight, strength and good looks. Can’t say that they are overly stiff but I’m not really fussy about stiffness unless it is really obvious. Like going from my nomad with fox 36 forks back to the anthem with fox 32 which feel like spaghetti for a few minutes until I forget about it.