Yes, I like of having XP boot up within Mac, and I would consider that a big benefit over Boot Camp, but what else? Boot Camp was so easy to install, and I didn't have to do much tweeking after loading XP. Parallels installs Ok, but in XP I can't burn DVD's, it won't see my external HD, and it takes a little to get file sharing set up properly. What else am I missing ? I can still get Parallels at a discount, just not sure it's worth it. Boot Camp is still free and works much better for me in Mac & XP.