For a year or more now we (hubby and I) have been unable to get really nice potatoes. Anybody any suggestions? We've tried all the shopping centres, and all the 'normal' types of potato. They either break up during boiling (mush), or there are hard centres left in some while others are well cooked, or they won't mash properly. All we want is a potato that doesn't mush when it's boiled, and makes a nice (lumpless) mash if so required. Help?