All good mate, my comment wasn't directed at you!
As far as the actual sticking (whether double or single strokes), don't be afraid to experiment and come up with your own ideas. A great book to give you some 'tools' to develop this is Sticking Patterns by Gary Chaffee.
But a good rule of thumb when it comes to "straightforward" metal and rock fills is everything powerful is played as single strokes.
If you want to see a metal drummer doing stuff that's completely different, or taking basic concepts and making them just sound amazing, check out Blake Richardson (Between the Buried and Me). I've been working through his transcription book for the album Coma Ecliptic to try and get inside his head and figure out how he does what he does.
If you want a good starting point, there are a few good videos of him playing their songs Blot, Voice of Trespass, Famine Wolf, and King Redeem, Queen Serene - check them out. Could easily be a bit overwhelming at first but definitely check him out and it'll probably change your perspective of what you can do musically!