It's the best timer I have ever owed. It is easy to use and very well made. It comes with comprehensive instructions and will make your life in the dark room much easer. This is the first timer I have had with a foot switch which makes burning in less of a pain. I have my safelight wired in as well.
I can't imagine going back to a regular timer. I have a Gralab 9000, gralab 451, Jobo multitronic, Jobo 5000. I don't even think about using them anymore. If you do split contrast printing, you won't want anything else.
I purchased a stopclock vario for I have a V54 head on an old Bes and the improvement to my printing was immediate. I also picked up an analyzer pro and went through the calibration process for ilford MG. Currently I can make a perfect working print with a single piece of paper which saves me time and cash for big prints. The calibration process is time consuming. These things pay for themselves.
It's the best timer I have ever used. Yes, it is the Cadillac of timers! With my Saunders Dichroic enlarger and Ilford's multigrade papers, I successfully established dry-down factors of -1 for RC paper and -8 for fiber paper which are astonishly easy to set on the timer!