"Black Sea" was the first rock record I ever got as a kid.
I slept on the band until "Dear God" became ubiquitous on the radio, which turned me away for a while. Then upon college, I picked up the 1990 reissues of the XTC albums, and have been an XTC stan ever since.
"Black Sea" is my favorite, though I have an appreciation for the first two albums with Barry Andrews on keys. They tried to get Eno to produce their second album, but Eno told them "You don't need me! Your ideas are already good!" and declined*
My next favorite is "Apple Venus"... such a tremendous album, though I would have nixed "Your Dictionary" for another track.
*Yeah, it's possible Eno was making up an excuse.