Yes, rear shocks are something not to overlook.
I run Fournales shocks since the early '80. Getting old, I thought these shock where relatively uncomfortable but perfect for the handling they gave to the bike. (these shocks use air as the spring, and as such are virtually free from bottoming and of course very light because air is so light compared to steel. Add to this that one can adjust the sag at will with the simple use of an air pump)
So my back complained (and my wife refused to ride on the R65). So I went to Mike Capon Shock Factory and bought a pair of his "simple shocks". These are "standard shocks with a steel spring and an adjustable damping system with the use od a dial. HE adjusted the spring strength to my weight and the one of my wife.
At first, the precision of the ride was gone. But comfort was here. So I adjusted click by click the hydraulics until the ride become quite as precise as before. Comfort reduced but did not completely loose the improvement from the Fournales shocks.
I had to augment the preset of the springs too to account for the very bad roads in my neighborhood.
I hope these shocks will run as long as the Fournales (more than 150 000 km, with only a couple of oil change and one set of seals change during the years) but for now I'm a very happy customer. Modern "plain" shocks still have their words...