Hi Zed - Do you want out-of-the-box functionality, or are you comfortable flashing third-party firmware? I know you mentioned "relatively easy to use", but that can mean a wide variety of things...
For routing, a $50 WNR3500Lv2 flashed with Tomato can be perfectly rock solid, assuming the workload is light enough. I've deployed dozens for my SOHO clients. For something stock (and thus supported and warrantied), the Cisco/Linksys RV/LRT series or TP-Link metal enclosure stuff seems to review decently well (I'd say those are still in the try-and-see category). Moving up a bit in price, turn-key security appliances could be an option. Value players like Zyxel have killer options in the $200-300 price range. I've done numerous USGs for small business clients, and for basic topologies without a lot of on-device workload, they'll run until the end of time without needing a reboot. But again, in the budget space, as soon as high-performance needs arise with stuff like VPN, firewalling, NAS, etc., you're best to delegate each to a purpose-built box of its own.
For wifi, unfortunately steve's advice probably holds true, but if you simply must pull the trigger, then the first method would be to re-purpose a consumer all-in-one router into AP-only mode. By doing so, you limit the work scope and keep firmware buggyness at manageable levels. Last I knew, the Netgear R7000 or Asus AC68U were the frontrunners for AP duty. Or if you're an Apple head, then the latest airport extreme base station isn't fairing too badly either. The second route would be an actual business-class AP, standalone or mesh, whichever your preference. For AC, stuff like the EnGenius ECB1750 or D-Link DAP-2695 come to mind. Expensive? Certainly. But in my experience, they tend to "just work" better for their intended purpose. Your mileage may vary.
Hope some of those thoughts help.