I'm wondering, how can we determine the model of router we should use in any circumstances, since we have the 1800 series, the 2800 series and others with higher capacity. How should I know which one to install instead of the other. How can I make a deference between them!! since what amount of users should I use a 1800 series and since when should I use a 2800 series and so on ?

thanks in advance!!!