How many of you use the onboard effects of your arranger? Which ones do you use and which do you never touch?

My question comes from thinking back to the days when I used a wah-wah pedal with my Farfisa and then later with an electric piano. Back then I also incorporated a chorus pedal and a graphic EQ.

Would we be better off using offboard FX stompboxes like guitar players. Which option is easier? Which is better?
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