[modeller_usage] <modeller> objective function??

Hello,

I am a new user of the program modeller and actually it works quite well. So now I have a lot of different models and want to choose the best one. I know that there is the modeller objective function but I don't understand completely how this function is calculated. If I compare two models with high differences in the objective function e.g. 500 and 4000 with the programm procheck I cannot find big differences.

a second question: how many loop models should normally be calculated? 25 are many and the computer is calculating and calculating....

thank you in advance for answering!!

Steffi