As a 'serious' gamer who also loves casual gaming, I want one of these. I hate playing casual games on my phone. The lack of physical buttons constantly shits

As a 'serious' gamer who also loves casual gaming, I want one of these. I hate playing casual games on my phone. The lack of physical buttons constantly shits me. I've tried all the various clip-on controllers and have used wireless controllers tethered to the phone, it's just not right. I absolutely love my PS Vita, but wish it had better apps when I'm travelling, so something like the Shield, which has games for when i'm stuck on a plane or waiting for a bus/train, but also has full Android apps for when i'm travelling, is awesome. The fact it can run Android emulators with physical buttons is also a bonus.