If you're having problems with dvd-rw then it sounds like you'er using OS9. That's why I swapped over to OSX for both video work & dvd burning. So much more reliable & faster. Which OS version are you using??

I believe some of the mac G4's had Sony burners or was that the early G5's. I have absolutely no issue with dvd-rw's. Even the OS can erase a dvd-rw.

Verbatim disks are dirt cheap nowadays at JB-Hi Fi ... $2.50 for dvd-rw & dvd-r even cheaper. BUT ... it would be worth having a close look at your LG player manual or website support section to find out what disks it prefers. My brother bought a player which cost 3 times mine & boasted it could play anything ... not so it turns out. Some of the better known brands of players are in fact limited to the brands of dvd-r media they can play. Which really sucks ... excuse the language. Not worth paying big money thinking you're getting what you're not. Anyway back to the topic .. research your player to find what is recommended for it.

I'd be interested to find out why you're having difficulties using dvd-rw.