Seeing as how I'm on a budget, and am going to Europe for two weeks shortly, I was wondering if anyone has had any experience renting lenses. The second question is: What to get? First of all, I'm shooting with a Canon XTi, so I have the sensor crop to deal with. That said, I'd like to take advantage of that, and at the moment I'm between two lenses the EF-S 17-55 f2.8 and the EF-S 17-85 f4.0 IS I am currently carrying a 24-85 as my walk around lens, and for this trip I want to be able to shoot wider, clearer images with better quality glass. Granted, the first thing that pops into my head is some L-glass, but with the crop factor I lose my advantage in the wide angle department. So with that out of the picture it leaves me with the EF-S lenses. The 17-55 isn't as versatile as the 17-85 and doesn't offer Image Stabilization, but has the nice aperture which could be helpful for indoor shooting, which I wouldn't be doing much of. The 17-85 does offer IS, but lacks that nice bokeh-creating f2.8 the 17-55 has. So, if you could take either lens as a walk around lens in europe for two weeks, which would you take?