Flexibility of examination
If you pursue test skills and relatively high grades, I suggest you choose IELTS. IELTS is more flexible than TOEFL in location and schedule, and almost every test center has at least two exams every month, which is very convenient.
Achievement speed
The IELTS score is relatively fast, and you can get the score in about 10 days. If you are not satisfied with your grades, you can sign up for the next exam quickly.
Personal experience
After graduating from senior three, I will also go to Canada to study at a university. In order to enter a better university, I chose IELTS as my examination subject. I have tried it once in 1 1, and although the result is not satisfactory, I plan to challenge it again in April.