...are better than one! Fortunately, I'm currently not on a lot of medication, so I don't need to use both dosettes. In the past, I've loaded up my a.m. dose in one and the p.m. dose in the other.
Of course, you can always ask your pharmacist to blister pack your medications. However, I still prefer the dosette for the simple reason that I can also put my vitamins into those handy little compartments. Loading up once a month is so much easier than that daily unsnapping and uncapping.