Lacking a TS hasn't kept me from being interested in dado blades sets.
It appears that the Freud SD208 (and I assume the DeWalt DW7670 dado
blade set) are make out of thinner steel on the outside blades.
Besides for including a 3/32 cutter, whereas the sets above only go down
to 1/16, besides shims, I'm pretty sure that the Freud SD508 has
heavier steel on the outside. This seems to me like the feature which
is mostly likely to preclude tears (from the eyes) when the pieces don't
go together like they should, but what do I know...
Both of the former sets are priced in the vicinity of $85 and the SD508
is currently priced at $199.
Comments welcome (Mike already made me aware of the adjust-a-width SD-608).
In related news, I bought a Bosch ROS today for my wife. Tis the
season! ; ) And yes, if you had read another post I made, I got her
the ring that she wanted. I could of had a V8--oops, I mean a Freud
Adjust-A-Width SD-608 Dado Set! Wow, tears.. lol.