I just bought a pismo and installed a G4 550 cpu upgrade and am running tiger with 512mb of ram my question is will it be worth the cash to upgrade the ram to 1gig? I already put a 160 gig hd 5400 rpm and everything seems to be running great but I have just orderd a DvD burner and plan to use it to copy Comercial DVD's so I can take the back up copy and leave the original at home.I must admit although this is not my first mac it is my first mac laptop and I am pretty pleased over all .I was selling alot of the G4 upgrades and felt it was time that I actually owned one so when a customer asks I can tell them from personal experience instead of reading them the company memo's