Most of the available Wireless modem/routers are both good performers and far less likely to drive you mad than in the past. I use Netgear, whcih has four ethernet sockets as well as wireless and that does me well.
The only thing worthwhile that I can say on this, is to get a fast one. If you are sending a lot of data between computers across your network, then don't bother with the standard 811G speeds of 54MB/Second and get either a 108MB/Sec or 125MB/Sec combo. There will be no difference in internet speed, but there will be much more elbow room for your internal traffic.
Conan