We tested Glock and Springfield Armory compact polymer 45s in a January 2013 head-to-head test. Here's an excerpt of that test.
We tested two Caracal 9mm handguns (which have since been recalled) against two 45 ACP handguns in a September 2012 showdown of self-defense pistols. The 45s were the Springfield Armory Lightweight Champion Operator PX9115LP 45 ACP, $1076, and the Dan Wesson ECO 01969 45 ACP, $1662. Here's an excerpt of that report.