I've gotta say I love the Suzuki, its 6 gears and low center of gravity means I can imagine it can rail some mountain road corners, although not mad about the overly swoopy fenders. The Suzuki's weight is a real concern, obviously caused by the water-cooling and twin exhausts. Are there any obvious ways to reduce the weight such as pulling off a heavy center stand?

The figures say that the YBR has a better power-to-weight ratio, but I suspect in the real world plus rider plus more torque, plus six gears, plus lower center of gravity the Suzuki will be the quicker bike especially when the Yamaha gets hot and you are in the hills.