A friend told me a couple days ago, that she had read that using the powdered dishwasher detergent cause less problems with the glasses.
In Indiana, are water comes from natural springs that run through lime stone. Therefore we require water softeners. For us, this makes a huge difference on laundry, especially whites. But it also effects how soft things such as towels come out. I had to do laundry without a water softener for a while. It required more than twice as much detergent. Hard water also destroys appliances, including dishwashers and clothing washers & water heaters. Our furnace circulates water to heat the house, although it is using the same water over and over. Hard water requires stronger chemicals for cleaning toilets, tubs & sinks. So in the long run, our water softener pays for itself. Many people have rental water softeners. Without a water softener, people in my town don't wear white or light colors.