It is always difficult to know when you first start printing, which developer and paper combination to go with. Pick one and stick with it. It is not a good idea to keep chopping and changing in the beginning.
The best way to approach this is to choose the developer that the manufacture recommends for their film and paper. They have spent a lot of time researching what works the best. Once you have become used to developing and printing you can start to experment if you wish.
Film Ilford FP4+ 6x6 neg, developed in Ilford ID11,
printed on Ilford Multigrade RC gloss,
processed using Ilford multigrade paper developer.