I'm setting up a Multigrade 500H head on a Laborator 1200 (brimming with excitement!) and I have a couple of questions regarding RH Design timers which I hope users of these equipment can shed some light on. I've been told that the RH Design StopClock 500 timer is excellent and is well worth the big bucks it sells for. I'm hesitant because I'm not sure about getting a timer that is model specific and dedicated solely to the 500H - apparently it can't be used with any other enlarger heads. Can the 'regular' StopClock be used with the 500H? Also, my understanding is that the StopClock 500 timer works by a two exposure method to give a particular contrast grade - sort of a serial double exposure with varying times for the blue and the green bulbs (instead of varying the intensity of the two and exposing simultaneously). Well, this double exposure method does sound (dare I say without having used it) clumsy. I also anticipate difficulties in repeatability in dodging and burning. At the very least it does sound like it'll be a hassle to work with. I'd very much appreciate your views based on your experience on this please? The 500H I've got does come with the original Ilford timer. Any opinions on this Ilford timer compared to the StopClock 500? I'll be printing with both graded as well as variable contrast papers by the way. Thanks and best wishes!