Well, I was re-reading Dusk in Kalevia(an extraordinary rarity, I almost never re-read novels, but it's real fucking good), but since I'm off for a funeral(Nobody I knew well, but one I'm obligated to show for), and forgot my kindle on my nightstand like a tit, tonight's going to be a foray into a highly suspect Clive Cussler novel that I found buried in the back of a linen closet. (Plauge ship, for the record.) I read pretty much anything, but mostly fiction. I read enough non-fiction, current affairs, history and biographies for work, so when it comes to reading for pleasure, it's almost all fiction, but I do read a hell of a lot.
But that's not quite what I meant - when it comes to manga specifically, I'm the equivalent of that reprocessing plant in japan that produces much of their gold output - like said sewage plant, I take in a vast quantity of shit and burn it down to find the gold in it. If it's mad, bad, and dangerous to read, I'm usually first in like going "Please sir, may I have some more?"
I do read plenty of good stuff too, but considering it's not unheard of to smash through an entire 17-20 volume series in a night, if I'm not doing much - that's literally exactly how I read all of Black Jack, much of it while chatting to nineless(old forum lad, you might not know him) over skype - you need a greater volume of fuel for the fire. And considering the average level of quality of what gets scanslated and translated officially, you run out of good manga quick, so I just read everything and find something worth liking, or at least talking about, in most of it.