I love the new super bar, "fat" as was told here. It's not a taller version of the previous windows taskbars, the usability/user experience with Windows7 Taskbar + task preview + jump list is the best desktop experience I had in many, many years.
I believe everyone should try Windows 7 (and WB7) with the new taskbar for at least a month before telling what is better in general.
This is only MY own opinion based in my experience with Windows 7 and should not be considered "the truth" by anyone 
Regards,
Dani