I had a 2001 Valk Interstate and a 2002 Goldwing GL1800, both great bikes, gobs of power, most of the other posts cover the experiences nicely, I actually road tested an LT while still owning the Valk. To state it simply, the Valk is a truck, the LT a sports car. Both fit tall and big people. The Valk needed an aftermarket seat, the LT stock seat is fine. I'm 6' 2" well north of 220lbs. The LT allows you to take suspension hits on the pegs versus your butt on the Valk.
I could never go back to a Valk, or a Yamaha RoadStar. They are good products but real dump trucks compared to the LT or the Goldwing GL1800. If your are addicted to high torque and gobs of power, go check out a GL1800. It handles well and is used as a tow truck in Sweden, don't believe me, go Google it.
I'm not sure I'd agree with the rest of the members on slow speed handling. The Valks and Goldwings have huge flat sixes and have a lot of bowling pin effect low centre of gravity, outrageous stability. It does make it easier to drive them for a newbie at slow speeds. The trade off is they are not as nimble as the LT, which I love as well and much prefer. Perhaps shorter riders don't have the upper body weight to wrestle an LT if you goof up on the balance. Low speed riding is a necessary skill, and one that needs tuning moreso as one shifts from bike to bike. You will find the LT will change lanes with a mere thought versus deliberate counter steering of GWs and Valks. The LT compares more with the Honda ST1300 but with more upright seating if that coment helps.