In my experience, Nikon lenses of the same age deliver very good and consistent performance. The choice of a wide angle is very much a matter of taste, my first choice of a lens after a 50 mm (like the f1.4 best) is a 24 mm, then comes a 35 mm (both of mine are f2.8 - obviously bigger apertures are vital if you're doing really low-light work, but they cost a lot more). Depending on your budget, Tamron lenses (particularly the SP series) can be worth a look, performance very good and available on e-bay and elsewhere for very little.