I have the xcal2 and it's the one for me. I have had the opportunity to try BIGBLACKFX4's Edge in my truck as well. It's impressive as well. Both tuners will do about the same to your truck. If you are like me, i like simplicity and reliability. Tried and true is a Troyer tuned xcal2. I'm not knocking the edge at all, but if you don't know what you are doing with the settings on the edge or xcal2 you could possibly damage your truck. This is why i choose Troyer to do my tuner settings for me. Good luck....