Results after 4 weeks (1 month) of uninterrupted mining are online, here is also the graph:

http://www.poolpayouts.com/after_week_004_normalized_graph.png

So far NiceHash has the highest payouts, Antpool just slightly lower, following f2pool, kano and btc guild. Also, NiceHash, Antpool, f2pool and btc guild are providing constant daily payouts.