we are using wireless broadband and it works fine. we have a static ip and weather doesnt affect our connection at all. we are near the airport and low flying planes doesnt affect the connection either. speed is also fine, we have 50 users on a shared burstable 256 kbps wireless broadband (using MMDS) with a guaranteed committed speed of 32 kbps.
on a dsl, you get a dynamic ip address. depending on your ISP, you get a burstable 256kbps but shared connection without a guaranteed speed. if other users use the connection heavily, you might end up at the losing end. if you are getting a shared connection, make sure you get a CIR (committed information rate). if you are going to get a dedicated connection, its better though more expensive. if you are planning to host your own server (mail, web, etc), try to negotiate if the ISP can give you a static ip address. most DSL providers I know only give out dynamic ip addresses. if that is the case, it is harder for you to set up any public server.
anyways, the bottom line is, a wired connection is better (and cheaper coz you don't have to set up antennas) than a wireless solution. you go wireless if you don't want a static ip and doesnt need to publish a server, you have a remote location which doesn't have dsl, you want it deployed faster (dsl deploys fast but leased lines take about 30-45 days).
hope this helps.
