I recently upgraded from a Bianchi Pista to a Bob Jackson Vigorelli, and am loving it. The geometry is slightly looser on the BJ, but this translates to a smoother ride, and believe me, she rides beautifully, smooth, secure and responsively. I had a bit of a sprint yesterday, and think the responsiveness of the 631 tubing more than makes up for the slightly looser angles. I've not ridden a Mercian so can't comment comparatively on their finish, but the finish and feel of this frame is top notch.
Hey Conan
I recently upgraded from a Bianchi Pista to a Bob Jackson Vigorelli, and am loving it. The geometry is slightly looser on the BJ, but this translates to a smoother ride, and believe me, she rides beautifully, smooth, secure and responsively. I had a bit of a sprint yesterday, and think the responsiveness of the 631 tubing more than makes up for the slightly looser angles. I've not ridden a Mercian so can't comment comparatively on their finish, but the finish and feel of this frame is top notch.
Thom