What's wrong with ezPDF? IMO the best pdf reader out there on mobile, beating the now overbloated GoodReader on ios
I think I'd have to agree with OP on that one because for a month, I had to read a 2 column PDF on a 10 inch tablet and that strained my eyes to do. Would a one-column PDF have worked? Yeah, it would have, but I think just barely. I can't imagine reading a one-column PDF on a 7 inch tablet (I hate scrolling unless it's to change pages), much less a two-column one.
I was looking for PDF solutions months ago, but if this works well, it could come in handy in the future.