David got a new modem called an ActionTek, but it doesn't work very well. Can he buy his own? Leo says he's not a fan of ActionTek. But David will need to call his provider and ask them if he can use his own modem. They will almost always say yes. For DSL modems to buy, Netgear makes a good DSL Wi-Fi router/modem. Zyxel also has good router/modems, but they're more expensive.