Full Disclosure: I did receive a trial version of the software and payment for the review. I am also a Friend of Red Gate.
I recently had the opportunity to review Red Gate's new monitoring tool, SQL Response. It's a nice simple application that keeps track of the basics. If you've got a larger monitoring system like Argent or System Center, it's probably not going to do much for you. However, if you're a small shop or you're a multi-tasked administrator, you might give it a look. You can read my review right here at SQL Server Central.