This wireless for my computer is a TP-Link, and as cheap as it is it is the only one that I have had that as not failed: running three years strong. Though TP-Link wireless adapters are not very well supported on Linux systems, the driver is buggy.
Cheap routers and me don't mix.

Let's look at what I do typically.
I run 2 laser printers (B&W and color), the build box (remote access and FTP), file server (with torrents, remote access and VPN), 2 desktops, 5 laptops, 2 cell phones, and 2 test benches for client computers.
I used to use 250gigs of data in a slow month, and 500 on a busy one, with the build box, that has increased to 500 on a slow month and 750 on a high use month. 95% of people use less than 200.
and now I'm getting ready to:
Start streaming a webcam 24/7
Add another web server to host half a dozen websites here, with as many as 500 people online at once and will add another 150gigs worth of data.