I have asked this ? many times. Have tried the CS demo twice and like it for a lot of things. PSP to me is way faster for layering and alpha selections.It has an instant screen cap and way better red eye correction IMHO.I also like how you can right click the images in PSP to do copy and pasting, and other functions. Image mappping and slicing is easier too. Though I find that PhotoshopCS saves a better colour and sharpness. Has good website functions. Here it cost over $900 so I am hesitant. I did a few tests once with someone who swore by CS.They did some special things to an image and said I could not do the same in PSP,which I proved wrong. I also like working with text much better in PSP. Together with PSP8 and Photoshop Elements2 I can do quite a bit. Guess I could go on and on about it.

"The happiness of a man in this life does not consist in the absence but in the mastery of his passions."