It seems to me that the 601 is a no brainer, but then again what do I know??
It's either this machine...
http://www.busybeetools.com/products/MILLING-MACHINE-WITH-DIGITAL-READOUT.html
Or this machine...
http://www.busybeetools.com/products/MILLING-MACHINE-WITH-DIGITAL-READOUT.html
Here they are side by side...
http://www.busybeetools.com/compare/5799/5283
It's either this machine...
http://www.busybeetools.com/products/MILLING-MACHINE-WITH-DIGITAL-READOUT.html
Or this machine...
http://www.busybeetools.com/products/MILLING-MACHINE-WITH-DIGITAL-READOUT.html
Here they are side by side...
http://www.busybeetools.com/compare/5799/5283