Industrial Hobbies and the Tormach. I like the IH because I have yet to buy a full machine from them, yet what I have purchased is magnificently done and they have provided me with endless support. Tommy and Gene are also a hoot to talk to. I have an x3 right now myself, and if I did upgrade it would be to the IH mill. Its the biggest and heaviest of all the benchtop mills, uses servos, has the largest travels, optical limits, etc etc. It also doesnt cost any more than the tormach or the smithy and has better features as stated.