Sometimes, there’s one spot in your home where Wi-Fi just doesn’t work very well. If your standalone Wi-Fi router keeps your laptop or phone reliably connected everywhere in your house except for that one trouble spot, a good Wi-Fi extender would be the quickest, cheapest fix. After a new round of research and testing, we’ve reaffirmed that the TP-Link RE315 can make a network noticeably more reliable in a small area, for an affordable price.