What kind of motor should I use?

I'm wonder what home hobbyists have used in the past for a milling
motor?

Here three from DeWalt
http://www.dewalt.com/us/products/tool_detail.asp?productID=115
http://www.dewalt.com/us/products/tool_detail.asp?productID=113
http://www.dewalt.com/us/products/tool_detail.asp?productID=2750

The motor has to be capable of mill thru:
Aluminium
Plastic (Plexiglas), UMHW, Nylatron, Teflon, etc...
Wood

I would like the motor to be able to mill through Copper as well
(multiple passes, slow feed)

What I'm really asking is for advice...

I don't know what to motor to get...

Could people share info
1.) What type of motor (make/model) are you using?
2.) Where did you purchase it?
3.) Why are you using it?
4.) What type of material are you cutting/milling with it?
5.) How much did it cost (don't forget type of funds USD/CAN/Euro)?
6.) Pros and Cons of this motor?
7.) Any other comments that you may have?

--
Lloyd Leung
Lloyd@...