Rate uniqM uniq2 uniq1 uniq3 uniq4
uniqM 24.8/s    --  -28%  -30%  -50%  -50%
uniq2 34.2/s   38%    --   -4%  -31%  -31%
uniq1 35.5/s   43%    4%    --  -28%  -28%
uniq3 49.5/s  100%   45%   39%    --    0%
uniq4 49.5/s  100%   45%   39%    0%    --