A solid, solid haul.
Since you got "Lex Luthor: Man of Steel", be sure to look into "Superman: For Tomorrow", by the same writer. The two have a very similar 'vibe' to them.
Depending on the lengths you want to go to to track down the level best Superman stuff, you might think about picking up the "Across the Universe: Alan Moore" trade, which contains two very awesome Superman stories: For the Man Who Has Everything and DC Comics Presents 85 (going by memory there), which is a Superman/Swamp Thing crossover.
http://www.amazon.com/DC-Universe-St.../dp/1401209270
It is very much worth your time.
Other than that, you should pick up the TPBs of the current Action Comics run by Grant Morrison, Rags Morales, et al. Best Superman story since All Star Superman, by far.
Finally, only tangentially related, you might think of picking up "Superman: Secret Identity". It's a beautiful book that's about what might happen if a boy named Clark Kent got powers in the 'real world', after years of being teased about having the same name as Superman. I know that might not sound like the most appealing high concept ever, but it's absolutely wonderful, and incredibly heartfelt. It's written by Kurt Busiek, with art by Stuart Immonen.
Well, enjoy!
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