Music is why I like U2. I don't like U2 for the books, the prints, the T-shirts. They're all fine, but those aren't why I like U2.
Physical versions of download-only releases such as The Eternal Remixes, or Ahimsa. CD, 12", or 7" - but if its a 7", you need more than just a 2 track 7" to justify the subscription fee. Maybe a 10th anniversary, CD version - or coloured vinyl variant 12" - of Wide Awake In Europe. It's the only release that many of us don't have. Secondhand prices of it are simply absurd. It'll fill a gap and still please the trainspot