Different types of planners give you a different perspective on your day. Which one is right for you depends on the level of granularity you need to see your plans. Often it helps to use more than one type of planner to get different views of longer range plans vs. daily details.
Monthly planners are great for the big overview, but they usually don’t have a lot of space for details to plan day to day. Many of our weekly planners come with monthly pages, so you can see the big picture of your deadlines, holidays and travel schedules, and see your daily details in the weekly pages.
Daily planners allow you to see the most detail of each day with plenty of room for detailed scheduling and notes. A great example of this is how Kenneth uses his Journal 21 day per page planner to keep track of his work and personal life. The Journal 21 also has monthly pages to help you plan ahead.
What level of detail do you need to see in your planner?