Another of my dumb noob questions.

I have seen where people make dados with routers and just the regular blade on their table saw by making multiple passes without a dado head.

How important is the ability to use a dado head on a table to a casual hobbyist?
The reason I ask is that one of the table saws I looked at Delta 36-6020?) does not take dado heads but is almost $200 cheaper than the other Delta or Dewalt I'm considering.

Thanks for your indulgence.