I bought a 2008 ST1300 a couple years ago to replace a ST1100. With 40Ks mile it was horrible to ride. As was pointed out to me 'Honda is typically under sprung and over dampened'. Every bump, tar strip, pebble came right up into your hands. Hands would go numb in about 20 miles. I'm not much for endorsements but I was nothing but impressed with Race Tech and the springs they provide, as well as the advise to solve the problem. Follow what they tell you. When you put the right springs in, your forks can actually travel a bit before you get into the dampening. Amazing what a difference. A Super Brace was in order as well. I don't know why these simply aren't standard. The last item this spring was the Heli Bar pull backs for the handle bars. These turned this into a bike I want to keep forever. Of course I cried at the prices I had to pay for the above listed items but I've found ST1300s to be quite affordable to buy, maybe because you have to fix them to get them right. But, try to find a Goldwing that's right. I do work on my own bikes. Picky about the suspension.
