[freak_brain]

I'm very close to having to make this decision. I am making a 4'X8' plasma that may be used from time to time as a router. So now I'm wondering, do I use ballscrews or rack and pinion??? I know there are advantages either way so is money the only real consideration at this point? Ballscrews seem easier and their not that expensive. What about racks, how do they compare in price, how difficult are they to get on the machine correctly??

Thanks for any advice you may have
Allen James