I am a sales associated for tech at my store, and I find that whenever I go to help a customer find a router that best suits their needs, I always struggle, for example, I always look at the AC number indicated on the box, because I was taught that, the greater number, the more bandwidth the user is able to have. Another thing, I mention to people, is the 5GHz that most routers support, and how that can affects speeds and etc.
What else should I say/recommend?