staining developers

I want to try one of the staining developers but am confused as to which one and where to start.I have read about PMK which seems to be the standard, there is Pyrocat and then a new one written about in the new View Camera that promises less overall stain and more image stain.

Have people read about the new staining developer and how might it compare with the others?

which one should I try?

thanks

eric