The other day I purchased a Canon Pixma Pro-100. I hadn't started off planning to buy a photo printer, but at $98 I couldn't resist. I shoot a Nikon D7000 and use Aperture as my digital darkroom. I don't shoot or print professionally. My prints will be used to print pictures of our baby when he arrives in a few weeks up to printing shots of mine that I like to frame and hang on my wall. So it's far from fancy usage. So what do I need to know about printing? Should I just use a Canon provided color profile or actually buy a screen calibration device? Do I need software that sits between Aperture and the printer to get good results? Thanks.