the scrolling is throughout the entire system and its as smoothest i ever seen it, the reson you might have choppy scrolling is cuz maybe the rom you tried had still htc touchflo scrolling enabled and it overtakes the 6.5 scrolling engine resulting in the clicking type scrolling throughout the os

heres the list of improvements over 6.1.........

new scrollbars (nice touch over 80's 6.1 style)

new 3d style menus and highlight <----makes a hell of a difference!!!!

smooth kinetic scrolling (much smoother than htc touchflo and has the 'rubber band' feeling)

chome (more useful than its given credit for)

improved contacts app (pics in list and spaced out)

improved file explore app (spaced out)

waaaaaaay beter start menu (no more ugly white 'all programs' page)

improved tab menus (small but nice)

microsoft marketplace app built in

weather widget app

money / stocks widget app

live search widget app

new and improved Internet Explorer (flash enabled and full page rendering as well as panning support)

new slide to lock addition (hella nice)

full screen caller id / in call screen (only when locked)


.....................that should cover the basics lol / im NEVER going back to 6.1 after getting the full 6.5 experience, everything is much smoother in these later builds than what we saw in MS's presentations