I am learning so much since getting my iPad four days ago. Now, which is faster, WiFi or 3G. I know we pay for the 3G, so I'm thinkin I just answered my question...
wifi is much faster, generally... 3g you pay for because it is "everywhere"... or not...
There's a free app called Speedtest in the app store that will let you compare speeds over a 3G connection and a WiFi connection.
It'll depend on your internet connection, but generally wifi will be faster.
If you have a very lousy/slow DSL line, 3G might beat your wifi... after all your wifi is only as fast as your internet connection is.
WiFi is quicker then 3G. There are videos on YouTube showing you.
IPad 64GB Wi-Fi + 3G