I've been using the photography package of Photoshop and Lightroom on monthly sub for a while now and am very happy with it. Simple economics - I can afford the low cost each month, whereas even the annual sub was out of reach given my current finances. The apps are downloaded to my desktop (both Mac and PC, as I use both so that's a big benefit) and phone home every 30 days to check the subscription is valid. There is a little CC icon in the Mac menu and a desktop icon on PC that open up the CC app that tells you what apps you have installed, when they last updated and gives access to assets and online community stuff; this does not need to be running to use the software. Everything I do with the apps is on my local machines, I don't use any of the cloud storage. No problem with other apps reading PSD's so there is nothing different in the file format for the CC versions. 

Solid professional apps plus a flexible and sensible way to buy into them; the CC versions suit my situation so I'd recommend them.

The Lightroom/Photoshop workflow for RAW files is awesome ....

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