The E is not tapered. If you want tapers the La Bellas are were to go if you can live with 34" scale.
I broke three of the Carvin Bs because the fat part cannot go around the post. Once I fixed that per the picture below (and Carvin customer service has sent me multiple Bs), I really like the focus of the B. But it is noticably louder than the other 4 strings. This is not something I have noticed on this bass before and the setup and pup height is all in good order. I am wondering if the extension I put on the B is causing it to be louder.
I may need to try a long scale set of Slappers and see how the B fairs (it is a 128 vs the 5511's 130). I wish the Sadowsky Blues had a killer B because I love the other 4 strings. But when I get down in the basement with the gospel group, I need definition and focus up to the 8th fret or so. And the Hard Rockin' Steels are just not warm enough.
