What is the best option for networking?

Hi,

I am trying to develop an arduino that automatically communicates to another arduino when it gets within a range of 1 meter.

The best options I found are Bluetooth and Zigbee.

It has to be as small as possible and easy to program.

I was wondering if you guys have a better solution.

At one meter I would think about using infrared. What data rate do you need?

ANT+ http://www.digikey.com/product-search/en?x=0&y=0&lang=en&site=us&KeyWords=ant%2B