Harleys and GS's are both very popular.
If I had done it right, I'd have figured out how to ship my GS and my WR250R here (one in my household goods?) I have my GS here. It is probably great for 99% of the roads, but there are times when I sooooo miss my little dual sport. There are some (though not many) good DS areas.
I think a GS/VStrom/Explorer/Tenere/Adventure is a good all-around bike here. You DO want lots of suspension travel. I'm not sure how the HD guys put up with all the speed bumps. I fuckin' jump 'em.
There are lots of times you'll be really glad to have a GS style of bike, in my opinion.
'07 BMW 1200GS, Yamaha WR250X/R (split personality) , and Husky TE 250
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