Whats the difference?

Whats the difference between using this Transceiver(http://www.sparkfun.com/commerce/produc … cts_id=152)

than using a couple of Transmitters(http://www.sparkfun.com/commerce/produc … ts_id=8945) with the receivers???

Higher data rates?

Leon

the range

the data rate

the consumption

the carrier frequency

the price