I had a V-Strom for a while standard mirrors have to be changed to Aprilia ones,their notorious for bad buffeting if I'd've known I would have tried one before buying

alas sold in less than a year 2000 miles !
In my opinion standard screens are too flexy aftermarket are always thicker which is why OEM crack around mounting holes,the vario is a good screen had one on a tiger & my 1st GS but by far the best is the deserto I have now it has infinite adjustments & incorporates side wind deflectors,I suppose its down to how tall you are & the preferd way you sit that determines what works best good luck