Originally Posted by GloryDayz
If you can rent both, that'd be best so you can decide.
The being said, my personal recommendation would be the 24-105. 17 is VERY wide and prolly not something you'd find useful all too often.
Here's an idea, you might want to click on this link and browse some of the pics you think are very close to the kinds of shots you'd take, then look at what those photogs used. It might be a waste of your time, but meh, we have time..
And speaking of wide, this will be on a 5D, so full frame sensor, no digital conversion.