One of the nice things in 11.04 that people should consider is that you can
now upgrade from the Live CD/ DVD. Just insert the CD or DVD and then it
will detect your old installation and offer to upgrade. If the upgrade does
not work (and I am hearing that lots do not) then you cna use the same media
to do a fresh installation (after backing up of course).

I have used Unity and GNOME 3 for several months and both are much improved
and will likely get better. However, the basic design of either is not going
to change. They are basically full screen desktops with lots of workspaces.
There are hotkeys to switch workspaces and activities, but the old metaphor
of dragging and dropping and minimize, maximize and restore is pretty much
dead. It is cut, hotkey to another workspace and paste rather than drag and
drop. too many clicks for me It is one activity per workspace. GNOME does
not even have buttons to minimize and neither has a system tray. Youc an run
in a windows in Unity, but it is useless because the menu is way above in
the top panel and you can only have one menu on a panel so than limits the
way you work, if you have lots of things open at one screen for anything.
You cannot customise much or add to the top panel. Anything that runs from
the system tray with a few exceptions will not work. That includes wallpaper
rotators, etc. GNOME 3 does not even have a shutdown option in the menu,
just Suspend and Logout (until you wise up and press Alt then Suspend
changes to Shutdown). Talk about dumb ideas!

I have heard people say they like both, but many say it is not for large
monitors and people who do lots of multitasking. It is more for people who
like the interface on smartphones and netbooks. It is the epitome of dumbing
down the desktop, IMO. For me it is just too much work. Too many mouse
clicks and too many hotkeys to remember and greater distance to travel on
the desktop. Besides I work best in chaos with lots of things open and many
distractions and both Unity and GNOME 3 work against that. Neat freaks will
love it! ;)