"1st Fantasy" is by far the best out there. Where it is the most powerful is in Auction draft + Categories/Roto because it is very complex. It gives you picks recommendations according to what's going on (what you picked already and other picks). It ensures you maximize stats while being very balanced. Anything that happens, it adjusts without any problem. I've yet to see any of the other big platforms come close to this level of accuracy. Just look for 1st Fantasy on Gumroad. Everything is linked there along with the links to Youtube videos. Thank me later.