Lpc2000

I see that Rowley is offering a Dev board for the new Luminay Micro
device that uses the Cortex M3 core. This is much more affordable than
the official kit.

http://www.rowley.co.uk/crossfire/crossfire_lm3s102.htm

It comes with an apparently full-featured version of CrossWorks that
is license-locked to the board. This is a very attractive offering!

They also have a board based on the lpc2138:

http://www.rowley.co.uk/crossfire/crossfire_lpc2138.htm

And one based on the MSP430:

http://www.rowley.co.uk/crossfire/crossfire_msp430.htm

The MSP430 board is the only one that has a DB9 for serial
communication, in addition to the integrated USB JTAG device. I wish
the Arm boards had a serial port :-(

The MSP430 board also has Ethernet, making this a terrific bargain!

Eric