SGC is a great place. Well run and friendly staff. The range is well run and everyone is watched properly. Some don't like being "watched" when shooting, but that is a childish attitude (usually the attitude of those who leave trash in the desert and shoot every sign possible).
Have taken classes there and the training is very good. Only so much can be done inside, so keep that in mind if taking a carbine course. Pistol stuff is great and a nice thing to do in the summer when it sucks outside. The concealed carry license class is "the best ever". Defensive handgun 1 and 2 are very worthwhile. Will be taking 3 and 4 as schedule permits.
SGC is run by friendly people that enjoy shooting and I can tell, have a good time.
SGC has entry level guns and $$$ stuff. Remember this is Scottsdale not a North Florida Pawn Shop : )
The staff isn't going to scoff at anyone buying the lessor expensive gun. More people pull up in F150's than Lambo's so feel comfortable.