I am comparing 4 different designs with different runs and trying to figure out which one is better and want to keep number of runs minimum. Attached is the design comparison I did. If i look at the power, 9run design has lowest power and rest of the runs are better options but if I look at the correlations 9 run and 18 run looks good and 12 run and 15 run has correlation issues. Fraction of design space plot is also good for 18 run design. Is there any other thing that can help with the decision that I am missing. Also if I look at the absolute correlation table, average correlation for all the designs is below 0.3 and there is no confounding. Is it safe to say that 12 and 15 run design are good although the color map shows some correlations (light blue/grey color)?
