I have several 50 lenses and I beat them in every way, although it is the most affordable. Mine has stayed tight and seems mechanically on par with any expensive glass and it's difficult to fault the optics.
Nikon 35mm f/1.8G Auto Focus Lens for Nikon DSLR Cameras - Black (Model 2183)
125 Review
Canon EF 50mm f/1.8 II Fixed Lens - Discontinued by Manufacturer
93 Review
Canon EOS SLR Camera Lens EF 24-105mm f/4 L IS USM
124 Review
Black Canon EF 24-105mm f/4L IS II USM Lens - Model 1380C002
78 Review