I upgraded to this freud dial a dado switching from the freud SD508 set.  All in all I like it.  However I do find it annoying that if you want to make a standard size dado (say 3/8") you have to look at the chart no matter what to figure out how to set it up.  Rather than use three 1/8" chippers it says to use the two outside blades, the 3/32" chipper and 16 clicks.  I find it annoying to have to pull the chart out every time to find out how many clicks each setup needs.  Also the included wrench does not fit a Sawstop table saw.  This is really not that big of an issue tough because the Sawstop arbor nut is wide enough to fit inside the dial a dado knob and still get Sawstop's blade wrenches on it.  I did install the full width dado on the Sawstop only to find that the arbor isn't quite long enough to support it safely, but that's ok too because I will never use the dado set to its full width.  I find it a little dangerous and would much rather use a smaller setup and make more passes.  The pros: The cuts are flawless as you would expect from any freud product.  Also not having to use shims to micro adjust your dado is great.  The carbides are also larger than the ones of the SD508.  I would recommend this set to any woodworker ... just don't lose that chart.