I've been searching craigslist and ebay both. Ebay has brand new ones but I'd rather have a lightly used one. It would be great to be able to go up to .080, but if it will handle .063 that would be okay.
4' is too small, 4' X 8' cabinets are the most common and so I need a 8', Also I have a job coming up in the near future that may require an 8' cabinet. I would consider a 10' if the price was right.