Just recently got this lens for my 40D. The 35mm length gives me a closer aspect to a "normal lens" that what my 50mm 1.8 mark II did.
The images this lens give me are clean, sharp with good colors and contrasts.
Yes, the lens is a little noisey, but you have to expect that for an older lens with no HSM.
The one thing I wish this lens had was better build quality. It feels like it's made of the same cheap plastic as the 50mm 1.8. My kit 18-55mm IS lens felt more solidly built than what this lens did and that sells for half the price as this.