I am at a cross junction on which prototyping platform I should choose. In the past we just grab what ever we can find but now there are so so many choices what I am not sure which to choose. Once you invest in the development ecosystem it will cost you to switch. :S
I have tested the first generation Raspberry PI when it was first released. Quite liked it but I will be a little slow due to my proficiency in Phyton.
Adruino yet on the other hand runs on ATMega 32 bit MCU and has too many variants. So it is another problem that external peripherals such as SD card, connectivity such as Ethernet port all are external modules.
I will bury myself in work for the next couple hours and decide later. :)