I guess it's not fair to say I "dislike" his voice, so much as I "don't like it as much as I wish I did." But even that is peculiar to certain instances. For example, I quite liked that solo song you posted. And there are Styx songs like "Lady" where I don't catch myself thinking I don't like it. "Come Sail Away" is another. As a counter-example, "Suite Madame Blue" that you posted is one where I wish his voice were something different (though I still like the song, and again, I don't strongly dislike the vocal).
I see they're coming to Lake Charles at the end of this month. They still have Tommy Shaw, and they've had Todd Sucherman on drums since like 1997 or something, who I quite like.
Hmm........