Welcome to the DIS!!!
How many are in your party and what are there ages? As the PP asked, how do you like to eat each day? Have you been to Disney before - a TS meal can take 90 minutes or more out of your tourning day/evening.
There is a "Sticky" at the top of this forum that can answer almost any question you have about the Dining Plan.
Only you can decide what is right for your family, given the ages in the group, your preferred dining style and your budget.
For us - a party of 3 adults who like to have a formal dinner each evening in a nice restaurant - it was perfect. If I was new to Disney and trying to see the most I possibly could, it would have been too much time in restaurants and away from the parks. So it truly does depend. Not one answer is correct for everyone.
Have a Great Trip.