I have 7 and 9(cs2). I use 7 the most, it loads faster. I’ve collected a lot of fonts and plugins too.
The 7 something I’m talking about is not Photoshop but some other software I bought about the same time (will get back to you on the actual name).
My only use for any of this software is to get rid of red eye for friends and family ... get to do this on a regular basis (spent hours trying to teach this to them to no avail) AND to modify advertising presentations for a few clients.