Hello All! So recently I just purchased my Canon 5D MK I. :mrgreen: I'm highly considering about buying the 24-105mm to start out with. This lens seems like its a really good lens for overall performance..good walk around lens, I like that. I was thinkin about the 24-70 as well...but funds won't allow. I'm about to get a never used 25-105 for $900...good deal? seems like it. I know this lens had a flare problem I believe prior to 2005 and was fixed. I believe the lens I'm bout to buy is a much later model such as 2009, but waiting to confirm with seller.