Which is a more accurate linear motion system?

Which is a more accurate linear motion system? linear rail vs v slot linear rails not quieter If anything they are louder They are definately more sturdy but not quieter linear slot diffuser installation detail Learn how to build a very simple slide system X-Rail x-rail Side

linear slot diffuser installation detail Comments23 ; Best Setup Vs Linear Rails

linear slot diffuser installation OpenBuilds V-Slot Linear Rail : : Industrial & Scientific  SUMMARY: OpenBuilds V-SLOT is a high quality extruded aluminum profile building block