I'm going to be hiring a bike for a little touring trip in Spain and\nhave the option of an F650GS or an F800ST. The price difference is 17\neuros per day. A couple of days will be quite long ones, i.e. many\nhours in the saddle. Obviously both will be more comfortable than my\nZX9, but wondering if my arse/wrists/back will notice the difference\nbetween them.