Take it from a maker. You will NOT be able to beat a Strider. Unlike what other companies "claim", with Strider the Guys and the gear have been there and done that many times over. There stuff is tuff and they stand behind it. Period!
That said, my first choice would be a Randall. If you want one and are having a hard time getting one, e-mail me and I can set you up with a good friend who is a respected dealer.
Nothing to say about the other companies mentioned. Like Momma said. Dozier is good stuff though.
If you find nothing else (no personal plug just a last resort option) I have a Model 12 that was heading to Vegas next week. It is the first availible in a year. They have been a favorate of UH60 crews, so have been moving quick and military always gets first dibs. if you want a look, I will shoot you a photo.
But go with Randall or Strider first picks, you will not be disappionted. And neither will your son. And let him know we are all proud of him!