I just, today, bought my first mac. I've always been on a PC and hated my workflow. I figured that with changing OS i can start over with how i orgainze and finish my photos. Right now i typically shoot JPG, plug in my SD card, copy to a folder and then use picasa and gimp as they are free programs. I dont feel, however, like i'm getting much out of them or getting the quality that i ought to. I am open to investing into photoshop/lightroom/or aperture. Is there a workflow that a majority here consider superior for Mac work?