I've always been a great fan of the Antress range of plugins. They're all free and if you take a bit of time getting used to the settings they sound very good. Another plus is that I've never encountered any conflicts when using them. Here's a link to the full list -

http://www.gersic.com/plugins/hosted/antress/index.php

I should say that I do not have any commercial interest in Antress.

ROG.