My PowerMac G5 2.3 is still going strong. However, more and more programs and functions require the Intel chip. So, it's time to keep up with changing times. As a photographer (side career), I have several hard drives and backup systems. I also have a large 30" NEC monitor. My primary CPU intensive program is PhotoShop. I also use Aperture. Through work (teacher) I have a PC laptop at my disposal. Should I upgrade to another desktop machine? Mac Pro? If so, which one? Or, should I consider a laptop machine for the versatility? I don't want to buy more computer than I need. However, I don't want to buy a new computer every year or two either. I tend to run my computer with a half-dozen or more programs running simultaneously. Thanks for your help.