I'm not sure why it took so long, but I finally got around to buying The Beach Boys' Pet Sounds on cd. To my surprise, the cd actually has both the original mono and the whole album remixed in stereo. According to the liner notes, "the stereo version was created, with Brian Wilson's approval, to give the listener a different aural experience, and it was originally presented in 1997 on The Pet Sounds Sessions Box Set."
Anyway, I've been listening to both versions tonight (on my spiffy new Grado SR 60s) and find that I much prefer the stereo remix. I'm curious to know if others have listened to both mixes, and what their opinions are.