Following this Thread, i buyed the Asus RT-AC86U (AC2900).
1. First of all, if you want to use AirVPN within your router make sure your Routers CPU has hardware support for AES. Because if it doesnt you most probably end up with low Internet speed and the CPU will have a hard time en/decrypting all the Traffic. Saddly i couldnt find a list that shows which router has hardware AES support and which doesnt. But i found a couple of threads over the internet saying the RT-AC86U (AC2900) has i