Pretty self explanatory. My 18-month old son self-destructed my T2 fit Abbadon after I spent a bunch on research books for multiple chars, so it looks like it's back to mining for a bit so I don't have to forfeit my Orca. The last time I was doing any serious mining the trit prices had fallen from 4.2 to 3.8 and I thought that was low enough but 2.19? What happened? In your opinion, what are the most valuable high-sec minerals for their mining amounts, and why?
(I have 3 chars with two maxed hulks and an Orca if that changes your viewpoint any)

—My apologies for smashing like four questions into one =)