So, I've been using clearblue digital opks for our first 3 months. I'm interested in trying the clearblue fertility monitor. I know it takes at least a month to get used to your cycles, and that's okay with me. What is the advantage of the monitor over lets say advanced clearblue digital opk, which gives you flashing smiley high fertility days, and peak fertility days (up to 4 days)? Is it worth the extra expense over digital opks? I could buy the monitor under my FSA, but would probably just buy out of pocket to save my FSA money for copays. So, tell me why you love (or don't love) the clearblue fertility monitor over digital opks please!