There are literally hundreds of 2-4 person tents available from $50-$1000.

There are thousands of archived threads on BF.net pertaining to this subject. I suggest you read a few of them:

http://www.google.com/search?q=tent+site%3Abikeforums.net&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-USfficial&client=firefox-a

You can learn a lot from Google searches too:

http://lmgtfy.com/?q=tent+buying+guide