I would like to add a high speed spindle to my PCNC770 but can't justify a Tormach speeder. I want to use mostly very small (1.0-0.5mm or smaller) cutters in aluminum, brass and Delrin so minimal runout is important.

What are people's experiences with the Kress 800 that Tormach sells? Other than slightly more power and 220 volt operation, is the Kress 1050 significantly better? Any users of Suhner units? Is there any other spindle that I should consider? Are there any accurate but reasonably priced spindles using brushless motors?