Have the Wilbers with an additional lenght of 20 mm, gives you a lot more cornering clearance. Wilbers asked my weight, how often I ride with a passenger and his/hers addtional weight. They calculate what tension the spring than has to have to satiesfy your needs. Mine is a bit harder than stock but the whole package is ideal IMHO. Only problem is my short legs...
I do have the cosiba seat that adds a bit height plus the shocks plus the front fork springs...and I´m only 172cm "short" I still reach the ground with both legs, but just.