Well, I'll pile on and get called for unnecesary roughness. Years ago I had a Craftsman RAS. An absolutely useless POS. Abandoned it after several years of non use. Truly abandoned it. Moved to new home and just left it behind. I own two SCMS, along with the other sundry WW tools. Bandsaw, PM66, shaper, planer etc,etc. About a year ago, in a weak moment, I purchased an old Delta 9inch RAS at auction for $45.00. I took the time, with Mr. Sawdust's assistance, to tune it properly, and replaced the table per Mr. Kunkle's design. What a pleasure to use. Dead on accurate and totally repeatable on all cuts. I have not used either SCMS since. Do you need a RAS? Probably not. Would you use one if it were tuned properly, and you took the time to learn its capabilities? I expect so. I like mine.