See I actually LOVE Sirius/Harry (and Harry/Teddy) because I love the godfather/godson relationship--that and incest are more of my guilty pleasures in the rest of fandom. Also I rarely have issues with the power imbalance unless there is a D/s or whatever type element on top of the chan aspect. So more of a twofer as far as the power disparity. BUT I do enjoy much younger chan than I ought to so I suppose you could say that's my guilty pleasure as I really don't like admitting it. Although it's definitely not a bullet-proof kink by any stretch. It might be true that there is less chan being written now but I know where to find the old ones. :P