Photoshop :: Appropriate Upgrade...

e I've considered upgrading Photoshop on my computer (I like what I have, and hadn't really felt the need or desire to upgrade), and since that time, a lot has changed.  Because of my lack of desire to keep track of the latest changes, I find myself extremely confused now that I am actually looking to upgrade, which is the reason for posting this. The general idea is that I'm currently using Photoshop 7, and when last I peeked in on Photoshop, that was as straight-forward as it needed to be.  7.0 was Photoshop, that's it.  Now what's confusing me is what would be the best version to upgrade to?  The obvious questions to follow -- what do I need it for?  Varied.  I do some web design, I do some photo touchups, and I do other aspects, such as getting ready to start production on an ezine (this is the primary reason I'm considering an upgrade, as I don't feel Photoshop 7 provides everything that I need to do that), for which I'd like to design a simple spread.  What gets me is what all these new variations of Photoshop actually are, and what route should I be looking to go so that it's still the Photoshop I know and love, but upgraded and with the various improvements and such?  I realise that might sound vague, but essentially I don't want to have to learn a whole new product just to enjoy the features that I already enjoy and know how to utilize,