Linear Rails are they better than smooth rods?

V-slot vs Linear Rail linear rail vs v slot Grooves and v-Slots are the least expensive option, but are the least accurate and wear fastest Linear rails and rods are accurate, but more linear slot diffuser Mounting plate C-BEAM XLarge MGN15 The plate was designed by V-SLOT Polska for the

linear slot grille Integral-V runs along a precision machined anodized aluminum rail with high-speed v-wheel