This is one of those threads where the people who seem to be at opposite ends on an issue are all absolutely correct. I have an RH Designs Analyzer and use it both for fstop printing and split grade as well as the "conventional way" using the meter, as well as the Michael Smith 3 prints method. It depends on what I'm printing for as to what technique I'll use. One tool lets me do all three easily. If I could figure out how to get it to click with each half-second like a metronome for burning in I'd be totally set, but there are other ways to get similar tracking of burn times.