Quick read on GCN:
Saddle angle - have we got it all wrong?
https://www.globalcyclingnetwork.com...e-got-it-wrong
Even a small bit of down angle is uncomfortable for me. I find level is the best and maybe a touch up angle. Writers conclusion seems incomplete because he doesn't mention saddle/bars relative position. But I guess he is writing for a certain type of rider: one who likes to ride up hills. One of which I am not. This makes sense: I like my saddle slightly up-angle because my favorite riding position is coasting downhill.