No AIs....that's great. I have heard the resmed machine records a lot of HI. I have even layed down in the afternoon and not fallen asleep but still shown some HIs.
I would look else where if you still feel excessively tired. Get a physical. Sometimes exercise can get the blood going and make you feel better during the day....stay hydrated and the usual stuff you probably already know about. Good luck...it looks to me like you have done a great job getting the apnea under control.