Unless you want to off road it lots, the std GS ( IMO) is fine. Go for the sport gearbox if buying new as the shorter 6th gear will be of more use in mountainous riding. I did a 2 week tour to the French Alps 2 up + luggage and found the sports 6th gear really good for the terrain where a normal E top gear would have been useless. My buddy for the trip had a Tiger but found the suspension far too soft for all the twists and turns and especially hairpins, and as a result was much slower than me everywhere.
Get the GS.
Marcus
Get the GS.
Marcus