papers have a differant behaviour in the stream of time in the different developers. my suggestion is:
-work with the paper applaying more or less the manufacturers recomendation. this is good for biggining, and also it works the best most of the time for the general use. the consistancy is very important, and the creativity etc can be achived in filtration with the mc/mg papers.
-take testes. look very carefully what happens to the paper while in the developer. first, base the testing on the normal developing time - as u would expose the paper for the 2 min developing. for example - the agfa mcc papers will give u in bromophen or pq a very low contrast image in about 30sec, and from this point it will continue to build up contrast and density. at about 1.30min the high lights also starting to take density a bit without the loss of over contrast. ilford mg5 for exaple will start showing image at about 45sec while building the density and contrast fast at the blacks and after the 1.30min the high keys will take some density as well. at the mid-time of the development the agfas has more uniform development at most tone values, while the ilford builds first the density of the lower tones.
whatching at this process u can start playing with exposure values and timings, and step by step understand both the nature of combination . paper/exposure/developer/time and of course - at the end evaluating the effect of the processes on the dry print - overall apearance, contrast, hue, the quality in which the fine details from the negative recorded etc.
in tetsting it is important to be consistent with all the things and playing with one aspect of the process at each time.