Linear rails vs v-wheels? : r3Dprinting

Looking for a cost effective linear motion product on your next design This latest video

With the guideway on the top of the y rail Looks like it would fit no problem Attaching to the original plates This

linear slot diffuser installation Adding linear rails to a length of aluminium extrusion is a common way to make a fairly rigid guiding structure, and I have been doing just

linear slot diffuser vs linear bar grille I'm curious if anyone here has thoughts on utilizing something like MGN15 linear rail and carriages for a 3000mm Y axis rather than V-wheels