And its really cool! It really adds something extra to an already awesome amp. A question, does anyone use anything but the suggested settings?

If you mean the setting that are in the C-tone Manual, then yes. Not by much though. Basically, it all depends on the volume I'm playing the amp. While the C-lator is sonically most useful when playing loud, the one thing that is most handy with it is playing at very low volumes. It's then that I vary the settings the most. At low levels. Drive: 11:00, Input: 10:00, Output: 9:30. This is all dependent on amp and effect setting.

At high volume the manual settings are pretty close to the norm for me. But I have pushed the output higher at times. I tend to not like the Input level much past noon. This is partially due to the TC2290's hot output.