I can say little about the milling machines in particular,
however here is something about Knuth:
In my teaching company a new drill should be purchased, due to the price and a seemingly very capable seller of Knuth, the firm also purchased a turning machine, our old one was already 25 years old and a check-up was more expensive than the new Knuth lathe.
The lathe was back at Knuth after only 3 weeks due to absolutely poor precision, it quickly faltered in its range. The drill that made a good impression at the beginning, was thrown away after only 3 years
The Knuth milling machine do you want to get?
If you only want a good price then have a look at Hommel
"Diese Ausrufezeichen, hast du die bemerkt? Fünf? Ein sicheres Zeichen dafür, daß jemand die Unterhose auf dem Kopf trägt."<br /><br />Terry Pratchett