I've used all 3 types and have to report failure on the part of nipples and cups for me. My hens flat refused to use the nipples and were frantic for water if I tried to force them. Not happening and I won't stress them like that. I had one highly intelligent hen who would use them but only one out of a dozen.
They used the cups ok but wouldn't peck the little lever in the cup enough to make them refill with water so they'd dry out and again be out of water.
So, I'm back to the old standard chicken waterer.
I'm using one of these from Little Giant I bought at Wilco and making sure to change the water daily.
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The spoiled rotten hens like it fine.