It's pretty hard to find descent A4000 with descent price, so i decided to put A1200 mobo to tower case and with SharkPPC there wouldnt be any difference anyway, if the machine is A1200 or A4000 compared to BlizzardPPC and CyberstormPPC. What case would be perfect or preferred, if i want to use A1200 mobo, Mediator1200SX and SharkPPC in the future? I got brand new A4000 keyboard, so is there a kb adapter for that to use with A1200?