I try to stay around 90%.
It recharges overnight and it gives the maximum my stake allows.
Look at your vote value at 100% and 50%, now ask yourself which vote you would rather give out.
Excess voting serves to punish the improvident.

Years ago a name you would know tried to push that crap on people.
He was wrong then, and he is wrong now.
I think he knew and was malicious in his advice.