Unlike the 50, I'm pretty sure the 55-250 is a pretty good bet used. A lot of people get it as a kit lens and then decide to upgrade to one of the four 70-200Ls, or a similar 3rd party lens. Actually, I got a 70-200 the day before yesterday, but have somewhat mixed feelings about having done so...Its so much heavier, and I already miss the 55-70 range. Anyway, when I switch from the 50 to the new lens, its like I tied a brick around the front of the camera
Anyway, the 50 is a gem. You'll love it, especially if you want to shoot indoors at night time. Crank it down to 1.8 and look through the viewfinder and its just like you're outside in the sun













