My PCNC1100 will be a year old next month and the ONLY thing I wish it had is 10,000 RPM. I had to turn down an engraving job a couple of days ago because at 5,000 RPM I just couldn't be comtetitive. What I really needed to do that job right is a machine with 50,000 RPM.
There were a lot of places that would have required the use of a .005 end mill. Five thousandths end mill? HA!! Before you can use it, you gotta be able to see it.