If you've got no intention of going full frame I would in a heartbeat. As you might recall I was torn between that and the 16-35 f/2.8.Tell you what, after this weekend, I'm pretty sure I'll drop the money on the 17-55 f/2.8. The 24-105 is fantastic, but it's just too slow for happy snapping at night. I wish they would release it in a f/2.8 version though - would be awesome!