AVR-Chat

Hi all,

I'm looking around at the available chips/modules for cellular network
access, particularly gsm/gprs.

One desired feature is the ability to control a device via SMS text
messages. Another feature is the ability to make a regular TCP
connection from the internet, and reach the device via the cellular GPRS
network.

So far, my search for the simplest/cheapest devices has come up with one
main candidate - the TelIT GM862-QUAD-PY, a python-scriptable GSM/GPRS
module with built-in SIM card socket, which talks AT commands over
CMOS-level RS232, and can also perform voice telephony. Described at:
- http://www.sparkfun.com/commerce/product_info.php?products_id=279
- http://www.telit.co.it/product.asp?productId=96
Price is moderate - US$140 - but I baulk a bit because it's way above
the price of entry-level cellphones.

Has anyone tried the GM862? If so, how has it performed for you?
Otherwise, can anyone recommend anything else a bit more 'bare bones',
for cheaper?

Looking to hook it up to an ATmega-based board.

Cheers
David