Don, I don't envy you the task of choosing. Each of three venues has a lot of merit. The number of top stakes races on Saturday takes us close to horseplayer heaven.
I agree with you that most eyes will be on the Bolt/Justify matchup in the SA Derby, but the Blue Grass at KEE will let us ponder whether Good Magic might be as good on Derby Day as he was in the BC Juvie. Even the Wood at AQ will bring us a couple of Derby entrants, although it doesn't look as strong a prep as the other two.
A similar issue exists for preps for the KY Oaks. I'm sure some entrants will emerge from the SA Oaks, but the same could be said for the Ashland, and possibly even for the Gazelle.
An overflow field for the Blue Grass was drawn yesterday. I think that both the SA and the AQ cards will be drawn later today.
I know that it can create a lot of issues, including difficulties on scoring, but a case could be made for a blend of the top stakes races from Santa Anita, Keeneland and Aqueduct. That could let us work on top preps for both the Derby and the Oaks, and I didn't even mention the Carter and the Madison for older horses.
Just a couple of thoughts for you to consider. I'm glad that I finished dead last on Saturday and don't have to make a tough decision.
I'll be perfectly happy with whatever choice you make. With so many good races you just can't go wrong.