Just got back from france, my thoughts on the gsx compared to the gsf,
the fairing and overall protection from the elements is better on the gsx, fuel consumption is better but dont understand why, unless its the bikes new fairing, on a similar run with the gsf i got an average of 43 mpg the gsx returned 49mpg in both cases i used the sat nav for mileage and mph.
There is a little more vibration from the gsx again i dont understand why, you would think it would be identical.
Brakes are better this is possibly due to a different compound of pad,
all the riding was done two up and with a fully loaded top box and panniers, if anything i would say they were a little overloaded but with my lady only weighing 7.5 stone i figured it wouldnt be to bad. I also fitted a pair of conti motion tyres on before i left and have covered 2500 miles on them, the front shows little to no wear and the rear has just started to show signs of squaring off and they performed very well in all conditions from torrential rain to 37 degree of heat, and gripped well throughout, i would use them again.
The suspension on the gsx is better than the gsf when 2 up and loaded set at the same settings as the gsf.
The headlight is not as good as the gsf,on dip it does not have the same amount of side coverage and on main beam it has more of a pin point beam not as wide as the gsf, this is using the 55w ddm tuning hid kits as were in the gsf.
So on the whole better in some areas and not as good in others, would i buy one over the other, if it were just for looks then yes the gsx imho looks better, but for everything else they are both good bikes, and i will be selling this on and getting a newer one next year.