Well, I'll stick my neck out and go ahead and say it. When it comes to DT, James LaBrie is why I got into them and still like them. Yes, he's not perfect, but he fits the band well, and I've never gotten tired of him, even with his mistakes. No singer is perfect all the time.
I've been getting to Awake more lately, and I couldn't imagine 'The Silent Man' sung by anyone else.