I've used HC-110 and PC-TEA (which at 1+50 works roughly like Xtol 1+2). In general I've gotten better results with HC-110, but I'm not sure if that reflects any special characteristic of the developer or is just a coincidence.
San Diego, CA, USA
The lady of the house has to be a pretty swell sort of person to put up with the annoyance of a photographer.
-The Little Technical Library, _Developing, Printing, And Enlarging_