Take it for what you will...Clever mining has consistently been better when averaged throughout the past month. Jump around if you like, I'll trust this pool any given day over the others. I trust consistency over variable profits.

Here's the past week broken down daily:

Date                Middlecoin  CleverMining  WafflePool  HashCows     Coinshift
2014-03-18      0.0053626   0.006637      0.0057547   0.005987    0.0056726
2014-03-17      0.0068538   0.006595      0.0066297   0.005600    0.0054815
2014-03-16      0.0096588   0.005445      0.0061009   0.008300    0.0052234
2014-03-15      0.0043988   0.006425      0.0053657   0.005700    0.0075447
2014-03-14      0.0010460   0.006612      0.0058229   0.006000    0.0066656
2014-03-13      0.0032652   0.004853      0.0061376   0.005800    0.0054182

Here's the Average payout per MHs averaged for the past: 1 day, 3 days, 7 days and 14 days.
Days   Middlecoin       CleverMining  WafflePool      HashCows        Coinshift
01      0.0053626       0.0066370    0.0057547       0.0059870      0.0056726
03      0.0072917       0.0062257    0.0061618       0.0066290      0.0054592
07      0.0055590       0.0061690    0.0060190       0.0060981      0.0059959
14      0.0055884       0.0065725    0.0063329       0.0060348      0.0059328