Help evaluating Keil for embedded ARM applications

I'm evaluating Keil as a possible replacement for my existing IDE for embedded ARM applications.  As a test case, I'd like to see how quickly I can get a simple app running with at least 6 serial ports and a file system.  My question is whether anyone can point me at any ARM (Cortex M3, M4, ARM9, etc.) evaluation or development board with at least 6 serial ports and some kind of mass storage (SD or USB Flash), interrupt driven serial port drivers and file system support.  Most importantly, example code to help me get up and running quickly.  Thanks.