I am a big fan of Ilford PQ Universal since first trying it a few years ago. I used to use Ilford Multigrade, and Dektol before that. PQ is my favorite. It gives me slightly snappier whites, and it feels ever so slightly warmer than Dektol or MG. And it's easy as pie to use, aside from the fact that it comes in a 5L bottle that must be special ordered from some retailers.