Hi John,
The others have handled the differences between iWork (Pages) and AppleWorks pretty well. The part of your post that caught my eye was this:
If I buy Appleworks does it have advantages
over the other packages?
iMac G5 Mac OS X (10.4.4)
There's no need for you to
buy Appleworks, as it is included in the software bundle on the install disk(s) that came with your iMac G5.
insert the first disk, and launch Install Bundled Software.
Uncheck everything that you already have installed, thehn click the disclosure triangle beside AppleWorks Languages. That will show a list of the 15 language versions of AppleWorks included on the disk. Check the box beside the version(s0 you want to install, then proceed with the installation.
Regards,
Barry