I am going to shoot all day June 1st in Raw just to see the diffrence, now that everybody here has talked me into it. I would like to do more post processing in Photoshop, so it sounds like Raw is the method. I really never thought about the files getting re-compressed each time when they are saved as a JPG.

As far as memory cards go, they are getting so cheap shooting JPG for space sake isn't really a big thing to me. I just want quality shots that I can enjoy for years to come. Heck I just found a 2gig card for $39.99. A couple of those and I could wear my finger out before I run out of room.