Hi All, This is my first post! Kudos to all who have posted here and helped me get some GREAT speakers. I currently have M22ti SE, VP150 SE and QS8 teamed with two Hsu VTF-2 subs. My question to all Axiom gurus is this. What do the model letters SE stand for? What is the difference between SE and non-SE models? They almost seem to interchange. Are the SE models most current or older? I've tried doing a search for this, but cannot find an answer since SE is two letters. Thanks for your help.