If it were me
1250 GS would be my choice
The GSA is unnecessary for me as I dont need the extra fuel range or the faux extra off road ability and it is too heavy
The 1250GS on the other hand is a rapid enough bike with loads of low down grunt decent handling and touring capability
All of which we already know so the question really is which you prefer or if you really need 300 miles range rather than 200
1250 GS would be my choice
The GSA is unnecessary for me as I dont need the extra fuel range or the faux extra off road ability and it is too heavy
The 1250GS on the other hand is a rapid enough bike with loads of low down grunt decent handling and touring capability
All of which we already know so the question really is which you prefer or if you really need 300 miles range rather than 200