Example of the quality I achieved from the heavily modified lulzbot mini. Note the near lack of ghosting/ringing.
Printed at 40mm/s, 0.2mm layer
E3D Titan extruder
E3D V6 0.4mm nozzle
Genuine Gates GT3 belts
0.9 degree stepper motors
Completely redesigned X, Y, and Z axis.
Customized firmware and tuned advance extrusion in Marlin