I'm the rarity around here. To me 18 was too big of a change and I ended up buying a 17. That's even with interstate speed limits of 75 mph out here. I just felt I was downshifting too much in the twisties, and lost too much torque. I might even go back to a 16 tooth when I need a new chain and sprockets, but then I plan on getting another bike that's more suited to long distances, and keep the Speedmaster as my "around town" bike.
