If you are lucky enough to have a large enough shop that you will never have to move your saw then you won't need this.  If, however, you are like the majority of woodworkers you are going to need to move your saw from time to time.  I have a dedicated shop and I don't usually need to move the saw other than to clean around it but I have found times when it was easier to move the saw than work around it and this base works great.  Was a little skeptical at first due to the position of the lifting wheel but it handles the weight of the saw, outfeed and extension tables well and is solid.  Assembled it in my garage originally and then had to move it into my shop months later when construction was done.  Actually had to roll it over the lawn on plywood sheets.  Rolled easily and very stable.  Great mobile base.  Don't waste your money on a universal base for this machine.