Got a Raspberry Pi model B a couple years ago -- it is a rather nifty little computer. Have not picked up a Raspberry Pi 2 yet -- there is a version of Windows 10 available for it that runs in "headless" mode (i.e. w/o keyboard/mouse/screen as you log into it via remote connection).
Have been quite tempted to get a C.H.I.P. for a while. The RasPi Zero is also equally tempting too. There's a certain beauty with these somewhat minimalistic computers.