I own four of the Airmax scopes,both 6-24 and 8-32 plus three of the latest model 6-24x56 Sidewinders, plus one of the 8-40 Sidewinders with the ED glass. All have served me very well with only one significant issue experienced years ago with one of the Airmax scopes, and it was replaced instantly at no charge with no questions asked.
The Sidewinder series is a real step up from the Airmax series. The turret caps lock positively once zeroed exactly where wanted. The turret caps on the Airmax use tiny Allen head screws that are somewhat of a pain. The illumination on both scopes work well but is superior on the Sidewinders. Both have metal lens covers that work very well.
Finally, my Sidewinder 6-24s are FFP. I really like this series as one dope chart works perfectly for every magnification series, and as I prefer the simplicity of using holdover as opposed to turret ranging adjustments, they are fantastic in this regard.
Finally, I have shot tens of thousands of rounds through these scopes and have communicated with Hawke personnel maybe a half dozen times over the years. The experience of Hawke ownership has been great all of the way around.