If you want my honest opinion as someone who worked as an engineer for an ISP for two years and worked with wifi implementation everyday, it's this:
Wifi is fucking terrible.
It's unidirectional (except for the newest, hottest implementations that almost no one has), inherently lossy, inherently jittery, inherently not made for strict real time situations like gaming. I would pick a wired connection over a wifi connection in 100% of cases. The only way I wouldn't use a wired connection is if I was in a house where getting a wired connection was nearly impossible. Spending $150-300 on a high end wifi router? Look into how much it would cost to run a cat5E cable to your system. But if you have to be on wifi because of your house limitations know these things:
1) If you have an Xbox One (not Slim), it doesn't have 802.11ac support, so no matter what fancy router you get, you'll never get over 60mbps over wifi anyway.
2) Even if you have a XBOSlim, getting above 100mbps over wifi ac is nearly a pipe dream unless you have your house encased in lead and you have zero walls/floors between your router and your Xbox. In real world situations, you'll likely see somewhere between 70-95mbps throughput (with tons of jitter) on a nice 802.11ac connection.
3) You have to think about what you're actually getting out of the really high speeds (above 150mbps). You can only pull down as fast as the thing you're connecting to can put up. If you're looking for fast throughput for downloading games, Microsoft is never going to upload to you that fast. Just because your connection speedtests at theoretically 150mbps doesn't mean that places can send you data that fast.
4) If you're looking for low ping to PWN NOOBS, you shouldn't be on wifi because the error correction and hamming codes that have to be layered on top of wifi packets add a shit ton of padding to your latency anyway. Oh, and jitter is a very real problem at high speeds too. You'll get non-uniform packet delivery times which most games will try to smooth, which will give you a worst-case scenario situation anyway. And not to mention the low tick-rate servers for most console games means that having a super fast connection just means you get to be more frustrated when everyone else is skipping around.
If I were you and I was forced onto wifi, I would just drop my subscription to a 50mbps plan to save money and be thankful that I was still getting speeds faster than 95% of the Canadian population (yes, you read that right, 80% of Canada uses internet speeds of 5-10Mbps).
But if you are willing to spend some insane cash, I've heard some nice things about the Nighthawk routers, but they are super expensive:
https://www.amazon.ca/dp/B00NFS8088/
I never got the chance to personally test one (and a lot of the reviews I read were for getting high throughput in relatively small-ish locations, like apartments with tons of interference, not necessarily houses with far distances), but they review really well.
