An SLR isn't bad for street photography. It's the auto focus that often kills it for me. And with a dSLR for me it's nigh impossible to go to manual settings as with my M2 or R-D1. Manual still means I have to do finger acrobatics to set apperture, shutter time, etc, something my M2 lets me do in a flash with just 1 finger. Then there's the general lack of DoF lines on the lens barrels. But heck, an old manual SLR works just as well as my M2 for "street".