Ed,
Thank you very much for your prompt response, and for the plug-in itself. I'm a beginner and had been playing with the settings, the problem I run into as a beginner is I don't always know what result I'm looking for until I see it (which also means I have no idea what other filters may be of interest to me). Your explanation of the variables makes complete sense to me, I just wanted to make sure there wasn't a more scientific approach that may streamline my approach. I'll just keep learning by doing!
Thanks again!