Great selection, fast shipping, and pricing no one can come even close, including other sites with free shipping. My regret comes from the fact that before finding this top notch, saving money, friendly site, I have ordered a few Keystone Jacks from eBay and a month later...I am still waiting. In the meantime, Monoprice has already delivered my two orders, and the third is on the way.
As for complaints from other reviewers about fitting problems with modular Keystone Jacks, I have no such issues at all. To the contrary, having Keystone plates from different sources, as well, as form this site, all purchased Jacks are easily interchangeable.
I bought the red (as well as green and blue) connectors so that I could mount them to the 4-hole plate with VGA, which works but not quite as well as I had hoped. You must hold these connectors in place while connecting cords
PROS: functional, low signal loss, easy to install, easy to use