www.makemkv.com

And then I get very strange results - hundreds of titles extracted when there are only a handful on the disc.

Anybody know what it's looking for to decide that AnyDVD is there?

Look at your disc. If it has an ANY! folder instead of an AACS folder, 2 things. 1) It was decrypted by AnyDVD regardless of whether you use AnyDVD or not (I'm guessing this is an ISO not an actual disc?). 2) See 1) where I said it was decrypted. Meaning it's not protected.