If I were to buy TS12 again, I'd probably buy the Anniversary Edition, which is boxed, as it comes with a full manual and some other stuff. That's the old school in me...
That said, it's 6 of one, half a dozen of the other. Auran's pretty good about handling their digital downloads, though I still prefer physical media. I have a 25% off voucher that expires soon for the boxed version if for whatever you don't get it off of Amazon.