I'm still monitoring the JD staking wallet. It started out with 13k outputs of size 100 CLAMs each, and I set it to split to 25 CLAM outputs when it stakes. I counted the number of outputs of each size each morning, and plotted those counts on a log scale:
http://i.imgur.com/aqbUlD9.png is the 42 CLAM output, the most successful staker so far.