Jackson, BUT he's probably gone, so TATUM.
There's no way Tatum gets past Suns at #4 if he's there and all of Fultz/Jackson are gone 1-2.
I also feel Lakers take Jackson at #2, which is why I don't say "Jackson".
So you'd keep and draft, NOT trade down for #5 and #10. Not super high on Isaac to be honest.
But I HOPE this doesn't happen. Fultz all day!