I have a question for the masses. I was planning to get a 6055 and a controller. In the future, I may get another 6055, or a 6100. Should I get a multicontroller, or a single controller? I could put another pump on the single controller with a 'splitter' in the future, correct? Is it worth it to get a multicontroller now, on the possibility that I may get another pump in the future?