QUOTE=sven;2429327]My K1200S was every bit as good as my ESA R1200GS on the bumpy backroads of the Dales and Lakes, if not better

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If you're talking the main B roads through the Dales and Lakes, then fair enough, a K1200S is probably at least as good, if not better than a GS
But if we're talking about the typical single lane tarmac 'motocross' tracks, ala Hawes to Muker via Buttertubs or Reeth to Barnard Castle over the moors road then the fastest and safest way to ride a GS is with lots a body english and weight transfers.
The GS forks let you apply handfuls of brake deep into corners without the threat of front wheel washout, the wide bars allow you to move your body off the bike to keep the bike upright in sandy and gravelly turns or alternatively keep your body upright and lay the bike over in slow, steeply cambered uphill and downhill bends. For cattle grids, with sharp lips, you can stand and move your weight back off the front wheel to simply float over the obstacle. In heavy braking for downhill bends, your body is upright on the GS so stomach and back muscles keep most of the weight off the wrists. In really sandy bends, you can move your weight forward, place a foot down and almost pivot the bike around it. Bumpy entrances to tight bends, requiring heavy braking and several downshifts are taken with the weight back to keep the rear wheel planted, then weight is shifted forward to give front end grip around the bend. A GS simply floats over damaged tarmac, with no pounding on the wrists and if a sheep steps into the road or car appears unexpectedly around a blind bend, the GS can take to the verge or moor with little problem. Accelerating out of bends in low gears, the GS allows the weight to be placed on the outside of the bike such that oversteer moves the bike into and not away from the rider's weight.
In short, riding the really narrow and rarely used byways of North Yorkshire, an off-road riding style is far more effective than the typical sportbike practice of lateral-only weight transfer. The GS rewards this type of riding, while the K1200S simply prevents it.
Cheerio!
Steve