Opinion of Panasonic Lumix DMC-FZ8

Hi all,

I am buying a digital camera with optical image stabilization and currently
very interested in Panasonic Lumix DMC-FZ8. The one thing I am concern is
it use Li-ion battery pack rather than AA batteries. What kind of battery
pack come with the camera? Do I better get a better one or a addition one
for backup? How much will it cost? Finally, are there any other models
should I consider to?

Any help will be greatly appreciate. Thanks in advance!