I just received this recently, and I am very impressed. It is great to have a FORTH microcontroller board that has 'batteries included'. Many of the FORTH boards and firmware can run FORTH but this product has all of the words included to use all of the features that the board has to offer out of the box. I like the form factor as well as it does not force you to use a breadboard, and not having live pins exposed and the ability to mount the board in your application is something that most others do not offer. Having the LEDs driven by an I2C port expander is great since it does not use up the higher speed GPIOs from the microcontroller. Just starting to work with it, but it is by far one of the best all round solutions for experimenting with FORTH that I have seen.