I'm shopping around for some new Wi-Fi routers, and the Cisco Aironets look pretty good. There are some differentiating features between the models; in particular, the 1260 is designed for "challenging RF environments" (via the ability to add antennas, apparently), versus the 1140.
Now, my office is in NYC, which is heavily congested in just about every imaginable way. My iPod picks up ~10 WiFi SSIDs near the main access point, and you can assume that everybody and their brother is using their iPhone along with god-knows how many other devices, on both WiFi and 3G/4G. On a worst-case scenario, let's say that I'll have 50-100 people connecting to this particular access point. Does this constitute a "challenging RF environment", or is this a fairly typical, non-extreme load? More practically, does this justify the additional expense of getting the 1260?
Note: there are 3 other access points at various places in the building, but the one in the lobby will be the most heavily-used one due to its location.