Hey pal! As you are willing for more bandwidth, you need to choose for 5GHz
Take a look at this router: https://www.amazon.com/dp/B00BUSDVBQ
(TP-LINK Archer C7 AC1750).
This router has more features to customize/provide
wide range of bandwidth to many devices connected and also, it has 3 external and internal antennas with a single-cored processor
which obviously provides perfect generation of signals to your devices.