Wow! Thanks for taking the time to write that entire thing Pickles! I'm going to have to go back and re-read to digest it all when I have more time. I didn't realize that roots vs. twin screw were that big of a difference, but as I've started to do some research, I'm learning they are. I am finding interesting information that the Eaton SC that Mag uses is not technically a roots, but more of a roots/twin screw hybrid. I'll have to research into that more to confirm though, and to find out exactly what that means!