the bareknuckle for sure. I have owned both, and as solid as the mark v is, the bareknuckle is lighter and stiffer, and with a higher bottom bracket, so it is sized a little larger. I have a 52cm BK and the standover height was higher than a 53cm Mark V Pro.

The stiffness translates into better power transfer, but its lighter so its much more comfortable, IMHO. The Mark V fork is heavier, Ive tried it on my BK and prefer the BK all together.

Get a Wound Up fork with the 40mm rake, and your golden, its a great combo!!!!