Guys, you are tarnishing my faith in Linksys products.
But hopefully Cisco products on the other hand used for business use are still reliable as some of their older products.
In my country, warranty is a clear thing, but if you feel a consumer product hasn't lasted as long as you would reasonably expect the device to last, you have the choice to take it up with them (preferably the retailer) under the Consumers Guarantees Act (New Zealand consumer law). Under our law a product is supposed to last "a reasonable amount of time". So if all other brands are doing great, and a reasonable life expectancy is longer, they will have to repair or replace it for you. That is certainly something to think about after your 1 year warranty is over, and you expected at least another 3 years out of it.
Business-grade on the other hand, is something else.