Um have you regularly used either? I use PSP all the time. While I can use PS because I have more experience in PSP, PS is a strange interace and I have problems doing what I really want to in PS. That bing said one can easilly change the resolution in PS than in PSP. Setting color values is better I think in PS than in PSP. Working with layers in PS I think is better in PS than PSP ( plus I think you can make more layers. ) The history view and selection is better I thinkis PS than in PSP. Plus filters tend to load better into PS than into PSP. That's my opinion. PSP is a fine program especially for the cost. But I think ultimately you can do more in PS. Bsteph