I'd like to upgrade from the Canon Rebel XS I got started on. I'm mostly thinking refurbs to keep the cost down, thinking either the XSi or the 40D, or just sitting tight until the 60D comes out and seeing what that does to the 50D or T1i. Relative merits of all of any of those routes?
For what it's worth, I should mostly outside/travel stuff--much of it on bike trips with the camera in a case that then rides in my handlebar bag. I'm relying on Canon's 50mm f/1-8 and 17-85 IS USM lenses.