antminepool seems perfect so far. I'm getting within 5% of the calculator, even after 11/127 orphan blocks for the last 24h.
nlpool has 12/37 (32%) orphans for the last 24h. I don't know what's wrong with that pool, but it is not normal.
antminepool is not better at all. Connects only random, lots and lots of disconnects... can't be used.
Once the miner connects - it doesn't disconnect. My connection is steady for days now.