<I started on the Z80, then 6502, followed by ARM, 68K, 6809, 8048, PDP11, <MIPS in no particular order. I still like the Z80 and 6502, but the ARM i <one of my favourites. I've never written any serious code for x86, and <what I've seen of the architecture fills me with loathing ;-) ARM, MIPS are both unknown to me from design or programming. I've looked at the ARM though and it's very appealing. I've written code for 8088/186 and they didn't make me happy. They weren't that fast and awkward with the segments. I'd have rather used z180. I've been playing recently with z8001 and Z8002 and they arent too bad and much easier to like than the 808x. The 6809 was ok, it felt like PDP-11 but the speed wasn't as good. Never got excited over the 68k even though I've had two s100 cards pass through my hands with them. It looked sorta like 32bit PDP-11 with registers that were asymetric in addressing and use. My all time fun machine is still the 6100 (or pdp-8). It has an instruction set that's hard to forget and effectve enough. Allison