I have to buy a new Mac this today. I will be using the iMac for most usual applications, but it will be Final Cut Pro that places most demands on the iMac. Will Final Cut Pro run on the new low end 24inch with the shared graphics card? Or would I be better to buy the clearance model iMac - 24inch with the ATI Radeon HD2600-256 card? This model is $1399.00 in the Apple Clearance section. Or, should I invest the $1800.00 for the new higher end 24inch with the better Nvidea graphics card?