After using CS4 for years and years I have finally decided to upgrade for one simple reason, monthly subscription, it seems it's gone the way of MMO's or at least older MMO's where you now pay £17 a month for the product rather than a lump sum of between £600-£1000 so it's a lot easier on the wallet. At first I was a bit miffed as I read a few forums about peoples reactions to it but most seemed like the usual nay says who don't actually read up on the product they just hear "monthly sub" and go with the usual arguments of "You don't actually own the product", "If you stop paying you wont have access to your files" and "You need constant internet connection". All arguments were instantly dismissed once I read the handy FAQ on adobe's site about the product.
So what do you get for your £17? You get a version of PS which is pretty much identical to CS6 but it has a few other features mostly revolving around photography use but you also get constant updates of new features as and when they are released. You get 20gb of cloud storage for your files but those files still remain on your HDD if you so choose and you can choose which files you store in the cloud in case you start reaching the limit, or you can upgrade to a higher limit. You only have to connect to the internet once every 33 days (99 days if you choose to pay annually rather than monthly) and the program works as any other PS product offline just no syncing files with the cloud obviously. If you choose to stop paying you get the free version which is 2GB storage and of course any files on your PC are still yours like any other file, they don't get locked or anything, but obviously PS wont work.
It's still an argument that you never end up technically owning the product but the monthly payment also rules out having to pay upgrade fees whenever they release a new version or features, so long as you keep paying you keep getting the most up to date version of PS.
I will probably post some insights into the new PS soon once I get more use to it.