I can't comment on the other bikes but I have just returned (2 days ago) from a 8500 mile trip to West Africa on a R1150 GS Adventure. The trip was solo but with a lot of luggage and extras, the only weak point was the rear suspension unit which is now worn-out but there was a lot of off-road miles with the bike loaded to the maximum. The 1150 GSA is the best bike I have ever ridden with a pillion, try and get a test ride on all the bikes, with your wife, and go for the one which you like best.
Andy.
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