Hi, I had been thinking about using a dewalt 611 and maybe use super PID controler. I read some good comments about the benefits of spindle vrs router and a few good things about the 1.5 air cooled version. Most of my cutting would be wood, some plastic - sign board and a little aluminum. Looked on line z bit and it seems that option would not be much more than a 611 and pid. Any advise would be appreciated?