Buy a router with made by a good manufacturer. I recommend Belkin and Linksys (by Cisco).
When choosing your router look for gigabit ethernet ports for your wired ports. Depending on what wi-fi standard your wireless devices support look for IEEE 802.11g and IEEE 802.11n support.
Also you can get routers with modems built in to make it all tidier. For your price range you should be able to find lots of options (although I am guessing as I live in the UK).