I bought the Huey addon yesterday ($25) and was very impressed.
I was a Huey mechanic for several years and wish I had something like this when I first started my career.
Like Saipan said the scenery is ok, but man the sounds are cool and the mechanical detail is pretty nice.
I don't mean to ruffle feathers, but given that a lot of games today are tied to large defense contractors, any active DOD might want to keep a level head on what they install or say. Looks a lot like phishing and intel gathering to me. Just sayin' (loose lips sink ships haha).
That said, as a civilian dude, this sim is pretty sweet!
https://www.youtube.com/watch?v=4DKBDmuP7jI&feature=youtu.be