In the interest of full disclosure I use pyro. Pyro is like all other things in photography, you need to try it for yourself and see it if works for you. Some swear by it others see no difference. I have tried Pmk, pyrocat Hd, and have finally settled on my personnal dillution of ABC ( which is roughly 1-1-1-10/11). compared to other developers I found that pyro yields a better print (more midtones, more highlight and shadow detail), and the negatives are more sharp (not that it matters for my work).

Give it a go, and take all opinions with a grain of salt.