I grew up listening to my Dad's Black Sabbath, Deep Purple, AC/DC. By the time I hit my teenage years I was into Slayer and Megadeth. I love all kinds of metal (not so much power) but thrash is my first love.

Have you tried Gojira? They're a bit more out there than Opeth, but I like 'em.

I know the feeling re: role reversal. I had much the same when my daughter was growing up. She used to complain about most stuff I listened to (but hey, I had to endure Spice Girls and S Club 7 from her, so you know!). Now she listens to metal too. Never could get her to like Springsteen or Dylan though. Ah well, you win some you lose some!