Surge suppressors will protect equipment from surges. UPS will do the same, however; it also supplies a stead flow of power.

I'd suggest getting a decent UPS and buy a business grade Netgear router. I've used Linksys before and they were always good to me (had an uptime on one for about a year but the WRT54G I had was a bit finicky) but I bought a Netgear FWG114P and it has been working FLAWLESSLY for months and it wasn't much more than standard consumer routers.