I think I subscribe to both, but I must check as I've never accessed the digital subscription. I much prefer a hard copy that I can read when and where I want to. I know it's mine for keeps, and I can scan and print out individual articles.
When I want to build from an article I scan it, convert it to a text document, remove all the 'gravy' and reduce it to just the 'meat' with key text, photographs and diagrams. That way, I've got a succinct document with all the essential information, and by going through it in detail I gain understanding I might not otherwise have. That said, I could probably do the same with an electronic copy…
George B.