Pretty much all but the most ancient and cheap CRTs will have a SCART, so you’ve got no problem with connecting the thing up. I expect an old B&O will probably have S-video, SCART, Composite and Component sockets on the back, so you’ll be sorted.
I’d get a PVR (ie, a recorder) because they’re not that pricey, and they’re ace – record entire series of programmes, pause and rewind TV etc. You may find that you need a new aerial.
I’ve got a Humax PVR, and it works fine. Everything is as it should be, doesn’t crash all the time, the remote is sensible, menus all make sense and the guide works well. I’ve never felt the need to take things off the recorder and onto a DVD, as there’s tonnes of room and I just delete stuff after I’ve watched it.
I’d avoid the real cheap kit as it can be a pain to use and to crash a lot (never imagined a time when a telly could crash!). Try and have a go on the kit in the shop, as some can be horrible to use.