What is the best .40 S&W semi-auto handgun for under $450 used?

I have looked at the Glock 22 , the Springfield XD , and the Smith and Wesson Sigma series in .40 cal and I am not sure if these are some of the best choices. Magazine capacity, reliability, accuracy, and price are what is important to me. Any other choices that are comprable or better would also be great imput!