Cydia is an awesome place. But to get the most out of the jailbreak experience you must have the best sources available. I have included the best Repo/sources available in Cydia at this time. Some take a few minutes to load. Others, may say they are unavailable. You could get an error or unavailable due to the large number of people adding these sources. If this occurs simply just keep trying.
Top Ten Sources For Jailbreak 2012 iPhone 4S and iPad 2
Banned iPhone http://h7v.org
iNsanelyi Repository http://repo.insanelyi.com
Nadis Lai’s Game Mods http://imodgame.appspot.com/
Hope You Enjoy!!!!!!