I used my OBC112s often with a terror bass and AD200, depending on the gig. Good sounding cabs, very deep/warm, not a ton of treble extension, but if you like a vintage sound they work well. I'd say comparable to the 212AV on the top end if you run them with the horn off, but much more bottom. I don't think they're the most efficient 12s I've played, but orange doesn't publish any specs so I don't have hard numbers.
If you're coming from a V4B the heavier voicing of the terror preamp will be noticeable, but I found with a P bass or similar it often just works perfectly in a band mix.
I moved on from the terror and AD200 in favor of a Mesa B800D (and bass 400), but still use them with the OBC112 cabs. They're super light and compact.