Hello; Please excuse what may be a very newbie question. And I apologize if I have butchered the technical names. I am new to Open V- track. And also sorry if these questions are answered in the video (of the Ox). I had to skim it. I am early in the planning stages of designing my own CNC router. I intent to use it for hobby style woodworking and maybe some small aluminum parts with a 2ft x3ft working area. I was surprised to see show many designs use open- v-track rubber wheels on this site. I had always assumed that linear rails would outperform the open track approach. But so many of the builds on OpenBuild appear to be awesome quality that likely chose the Open V-track wheels for a reason other that just cost. I had always assumed the following: Con's to Open track wheels - That an Open V-Track approach would be more prone to issue with cutting debris accumulation than linear rails. - That the lateral stability wouldn't be as good with the rubber wheels. Maybe this is just a figment of the way that I picture the assembly operating. Pro's to Open track wheels - Could probably mount the gantry to a longer y-axis in the future without being constrained by the length of the linear rails. Maybe a more flexible approach down the road? Anyways, anybody that might have thoughts on these assumptions, or have anything else to share on why I should go one way or the other, it would appreciated. Marginal increase in cost isn't a huge issue. This will likely be the only CNC machine I ever build. Can't wait. JC.