My brother pointed this ARM processor out for me and it looks promising. I like the idea of a microprocessor fitting in a 40pin socket. And after downloading the +1Gb IDE for the MSP430 LaunchPad I find the compiler in the cloud interesting.
If this is new to you, have a look at; http://mbed.org/
Also have a look at the handbooks as it’s has many of functions we normally use; http://mbed.org/handbook/Homepage
Or maybe even enter the challenge?
http://mbed.org/blog/entry/Join-the-mbed-challenge/
Personally I think the price is a bit steep, but my brother has been kind enough to order one extra for me to test out.
