Belgian beers are a fad 
You're funny!  Haha!  I know this Crackin' is really Thuglas's "Mean Drunk" alter ego! What a troll.
Back to the topic though...
One of Duvel's biggest strengths is consistency.  So I would guess that if you are having an "every bottle is different"  experience, you have gotten some mistreated bottles.
I really, really liked the Duvel Draft that can be found in NYC and Philly.  It is less alcohol, and I think it allows the more subtle aroma and flavors to come through.  I had it on the same night as regular Duvel and I thought the alcohol actually detracted from the flavor.  It's certainly a classic beer though. That's not a matter of opinion.