If you don't like alternative metal or nu-metal, you won't like Disturbed. Personally, I love Disturbed. They were THE band for me, that eye-opener into music. Of course, I've discovered far more intricate and more musically adapt music, but I'll still consider Disturbed my favorite band.
But yeah, if you don't like anything alternative, you won't like Disturbed. Although their latest album Indestructible I'd definitely would call a heavy metal album. You might like it.