TLDR: Wifi speed increased by 5x, much better signal strength, easy setup.
The Asus AC88 just arrived and I had it setup and going within 5 mins (remember to download drivers before you install if this will be your sole adapter to connect to the internet).
I had to switch my home PC from ethernet over to wireless when I moved it into the back office. Wifi signal isn't great in the office and this was noticeable when trying to watch streams or play online games. I bought this due to the wired antenna base station which I figured I could put on top of the desk to try and get more signal. Anyway my signal went from -66db (on 2.4GHz N wifi) to -50db (on 5GHz AC wifi)! My internet speed more than doubled and internal lan speed was 5x higher! I'm a happy customer.