I love this planner and I tell everyone about it. It has really improved my productivity at work (my boss even mentioned the planner use in my review and how she's thinking of getting one!). It's a well built planner with quality materials and I have no concerns about this last the whole year with daily use. I use this every day to plan out the hours of my work day and the weekend. I'm getting so much done when I schedule my day rather than just listing my to-do tasks. The hour by hour breakdown has been super helpful. I take it a step further and put a line down the middle so I can schedule in half hour increments as well.
My only complaint is the monthly calendar view - it lists the days of the week Mon to Sun; rather than the Sun to Sat format. I've not gotten used to it and find I have to scratch out plans creating a mess on the calendar view. It seems an odd format to use when I also have a wall calendar by Day Designer and its Sun-Sat. It's not enough to stop me from using Day Designer for next year's planner, but I hope it's something the creators of Day Designer consider for next year's planner :)