Hi, I am new to the forum. I am looking to replace my standard range zoom ( a really cheap kit lens from my Rebel 2000 film days). I currently use a 40D and there is a chance I will upgrade to FF someday (but not in the immediate future). I keep hearing great things about the EF-S 17-55, but I recently started thinking that I should stick to EF lenses in case I eventually go FF. I know that is a constantly debated topic, so I am not trying to stir it up, but I am wondering which you would prefer in my situation...the 17-55 or a 16-35 f/2.8 plus a 50 f/1.4? I am afraid that I will miss IS on the 16-35, but it would be nice to know that I wouldn't have to mess with selling/buying lenses when I go FF.