Why would one move from Grub to Grub2?
GRUB 2's major improvements over the original GRUB include:
- New configuration file structure
- Scripting support including conditional statements and functions
- Dynamic module loading
- Rescue mode
- Graphical boot menu support and improved splash capability
- Boot Ubuntu LiveCD and some other ISO images directly from hard drive
- Non-X86 platform support (such as PowerPC)
- Universal support for UUIDs (not just Ubuntu)
- Improved internationalization, including support for non-ASCII characters
This question is not really relevant anymore, since Ubuntu 9.10 and later already have GRUB2 installed.
sudo update-grub just has still prevailed as the standard command.
sudo update-grub and
sudo update-grub2 are equivalent, so it doesn't matter which one you run.
/usr/sbin/update-grub2 is just a symbolic link to
There are no relevant benefits for the end-user. Only developers and distribution-maintainers benefit from grub2 over grub (see yevhenes answer)