The phrase "a thoughtful choice" is correct and usable in written English.
You can use it when referring to a decision that reflects careful consideration and consideration of various factors.
Example: "Choosing to volunteer at the local shelter was a thoughtful choice that demonstrated her commitment to the community."
Alternatives: "a considerate decision" or "an intentional selection."
This performance was achieved through a thoughtful choice of numerical methods and code optimisation techniques at every step of the algorithm, and was coded in Matlab and Simulink for the off-line and real time version respectively.
Prince Rasselas, weary of life in the Happy Valley, where ironically all are dissatisfied, escapes with his sister and the widely traveled poet Imlac to experience the world and make a thoughtful "choice of life".
Buying a smartphone as a gift can feel like a bit of a chore — not to mention being expensive — but if the Android lover in your life has been making noises about needing a new phone, then the Razr i is a thoughtful choice they're sure to appreciate.
Nike strikes me as a thoughtful choice for a first partner though — Sarah at PandoDaily points out that CEO Morin and head Jawboner Hosain Rahman are apparently buddies, but Nike brings some hefty brand power to the table and could give Path some extra staying power.
As I speed-read the news, I learned more about the winners and why both of them together made a thoughtful choice by the Norwegian Nobel Committee.
I've stumbled across some in the 17- to 21-year-old range and I have serious doubts about their abilities to make a thoughtful choice.
It's OK to walk away and return to the discussion later, when you're ready to make a smart and thoughtful choice about the words you want to use.
President Obama has made a thoughtful, considered choice.
His decision was almost a Plutarchian moment as when this 56-year-old man made the thoughtful choice to fight for the Confederacy.
In 1963, Jacqueline Kennedy's comportment, good manners and thoughtful choice of clothing at the time of President John F. Kennedy's assassination taught bravery to a generation overwhelmed by grief.
Using colorful examples from the most important aspects of life, Thaler and Sunstein demonstrate how thoughtful "choice architecture" can be established to nudge us in beneficial directions without restricting freedom of choice.
