This is my first post here. Last night I just ordered a new24 ' iMac 3.06 500gb HD 4 gigs of ram with wireless keyboard and mouse...I have a 3 year old G5 iMac with 1.5 gigs of ram and the G5 2.0 Power PC processor. My question is how much or a performance change will I notice and is the audio better with the new model. I loved my old one but after 3 years I thought it was time for a change..Thanks for any input..Jim