i, understand the Amiga 1200 us dilemma. I picked up a uk version. i have the us power supply, i am running a pretty basic setup right now, i have the indivision mk2 installed and have it displaying pal to my sun 21" monitor. so far it works.. there are mods to make the 1200 work ntsc. with some circuitry changing. or you can have pseudo ntsc by some mouse combo i believe.
dont' be afraid to get the uk version.
i am getting a keyboard adaptor soon so i can run a modern keyboard.
