30 Day D&D Challenge: Day 7 Favorite Edition

This is a tough one.  ADnD 2E was my first edition.  I truly love the DnD Rules Cyclopedia.  And I really do like DnD Next quite a bit.  But my favorite edition is...

13th Age.  

Yeah, I'm cheating some, but it's really everything I need and it was designed by a designer from 3rd and 4th.

So there it is.