Which Sims 4 Challenge is the best!

I never finished any challenge and only tried a few of them, but the 7 Toddler Challenge seems to be the most fun just by looking at it. A close second would be the Homeless Challenge for me, I will try to do both in the future.

I find a Legacy Challenge too boring because your sims are literally just dying after a few days and it's difficult to actually get attached to them. I usually give up before the second generation is born.

I never heard of the Elements Challenge before, so I can't say anything about this one.