A is an old favourite, one of the best tracks from an excelent album, while B is new to me, although Mary Timony has been involved in some fine tracks. I'm a sucker for a female vocal, too, but this song doesn't have enough about it that's new – although that's my kind of guitar solo, typical of Ms T – to knock Brain One off his perch.
Incidentally, can someone who understands music tell me why the Eno track always reminds me of 24 Hours from Tulsa?
I love both of these tracks, but it's a bit like choosing between chocolate and cheese. I'll give it to B, though, for being a bit bolder with the choice, rather than one of the better-known tracks by Eno.