reversia.ch says:
Excited to hear that a Mage game is in the works. I'm also still contemplating running another VTM game (or maybe something else), just can't seem to decide on the place and core theme/mood. I've been rereading the New Your by Night book, after Tiffany mentioned it, as the only two things i remember from it were "that's not how you pronounce Aisling" and "THERE ARE TZIMISCE IN THE SEWERS!".
@PlebeianG
In terms of Mage editions, i'd say that we have:
1)2ed - simplest rules, hopeful, cosmic adventures, with the "i can change the world!" attitude
3)3e/revised - gritty, depressive street-level survival, "the war is over and everybody lost"
4)M20 - a massive compilation tome, pretty much "everything everywhere all at once". utter (optional and not) bloat.
My vote would be M20 and let the storyteller have the freedom to build without the 'but the rules say this' arguments that might arise.