Marvel Heroic Roleplaying.
I know Cortex is still around...but a toolbox isn't really what I'm looking for. It's a neat system once you wrap your head around it. As an aside, I would kill to see Cortex do sword and sorcery...and Night's Black Agents (love the superspy vibe of that game but mechanically it just doesn't work).
Anyway, I overpaid for hardcopies of much of the MHR product line. I regret nothing! The campaign books are an incredible value, packed with stat blocks, story, and vibes. I really wish we had gotten an X-Men book (or two), Spidey and street-level heroes, etc, etc, etc.