What security issues are you worried about? Unless you intend to transfer secret data and advertise the fact that you are, you're unlikely to have anyone trying to hack your network. Besides which, you can enable MAC filtering and make it harder for people who do want to hack you.
Wired routers are pretty much the same these days I think. Obviously don't buy a stupidly cheap one, go for Netgear or Linksys or something. Anything over £40 is expensive for a wired routeri n my opinion. Depends how many ports you want though I suppose.