No off ear headphones, no microphone and lack of vertical FOV are the initial deal breakers for me. There are a few other issues.
If I was going to get it, I would have gotten it during the $300 off Christmas sale.
All that said I did consider the Aero. It is possible that if they release an Aero 2 with a few important upgrades that I would consider them.
Let me add that some feedback I've gotten by people who checked out the Aero and still didn't buy one said it felt like a very well constructed professional quality product. Compared to one other manufacturer that is a very different view.