The December 2007 issue of Motorcyckist Magazine actually did all the ergonomic measurements between the two bikes. On the Gen 1 they had the seat to footpeg distance as 18.1 inches, the reach to the bars as 29.0 inches, and the seat to handle bar rise as 2.4 inches. On the Gen 2 they had the seat to footpeg distance as 18.8 inches, the reach to the bars as 29.5 inches, and the seat to handle rise as 2.0 inches.
So in essence the Gen 2 has .7 of an inch more legroom but makes the reach to the bars is .5 of an inch longer and the bars are .5 of an inch lower. Hope this helps you out in making a decision. Its not a lot but it does stretch you out a bit more on an already stretching you out kind of a bike. I know I felt the difference and put Heli's and risers on.