I'd be interested to hear what people using ss conicals experience. They don't have the balls on them and people dump yeast. Do they have bigger openings? SS is more slippery than plastic?
I don't have any experience with a SS conical but I have read that they have a racking port above the level of the yeast. I think they leave the yeast in place and rack the wort off through the racking port. They only open the bottom valve to drain the yeast after the wort has been racked off. At least that is how I interpreted what i read...