Nothin wrong with a Dado blade if used in the correct manner, spend five minutes on the HSE web site and see how to use one with a crown guard and riving knife, you would only have to remove the riving knife if it is taller than the blade crown.
Also the link below is to a 3.5mm body saw blade with a 7mm tooth width a good substitute for a Dado stack.
http://www.pilana.com/en/grooving-tct-circular-saw-blades
