Which is a more accurate linear motion system?

Which is a more accurate linear motion system? linear rail vs v slot Compare the new Integral-V™ technology vs the standard profile rail product when designing linear slot drainage channels linear rail is not installed, since this printer uses MicroSwiss direct drive extruder, which is CNC

linear slot drainage channels V-Slot 20x40 Linear Rail​​ V-Slot® Linear Rail V-Slot Linear Rail aluminum extrusion profile is the ultimate solution combining both linear motion and a modular,

linear slot exhaust fan linear rails not quieter If anything they are louder They are definately more sturdy but not quieter  When 3D Printer LINEAR RAILS upgrade MAKE SENSE? 59K views · 1