John Rutter? ick ick ick ick (leaves to go clean away the impurities).
I've had to sing so many of that man's clap-trap pieces it makes me physically ill to think about. I mean, no offense, and to each his own and all that, but I really can't handle his music. At all.
For something much, much better, and still in the same general ballpark, try Morten Lauridsen
As for classical music generally, shit, I don't even know where to begin. How about Arcangelo Corelli
? Corelli rules. He even has his own progression
named after him.