My problem with the 50 mm len that i have (on a cropped sensor like the d5000) is that for me, i find that my camera is zoomed in further than I would like for an every day walk around lens. Its great for portraits and some event type shooting, but for me, its not wide enough to keep on my camera most of the time. Instead i use a 17-55 and find that a lot of my shots are around 35. For me, its more natural, so I would go for the 35. Both are great lenses but it comes down to personal preference.