I still got my nano sitting on my desk in it's little foam protection block... have not done anything with it yet, opted to try the Trinket first as it was smaller. (but not by much)
@Arouse1973, the Arduino family is usually programmed the same way with some minor additions for features. The RaspPi is a bit of a different animal altogether. Most people opt to install Linux on it and program within that using PHP, C, bash, etc... any linux programming language really. Everything is stored on an SD card, so there is no real 'Flashing'.
Some of the die-hards will actually program the RaspPi bare-metal, but once again, it is a program on an SD card.
@bigone5500, I like the single LED in the Arduino MEGA. How many do you plan to blink at the same time