Hey,
I will share my experience with you and you can decide then. When I had my placements, I had no idea what topics come under quants, or what are the types of questions asked. And there was so much hype about the aptitude section in placements tests that I was already scared. My college provided some study material but that was not of help as seniors said it followed the old pattern/ format and was generalized material. I was struggling a lot as I had no idea where to study and what to study.
I asked my brother for help and told him all my problems. He suggested that I visit PrepInsta and study their material. I visited the website and checked the syllabus for quants and the other sections. Then I contacted the support team and got a detailed idea about the courses available. I purchased the PrepInsta Royal Pass which is a combined training program for all companies. The material had pre-recorded lectures that covered everything from basics to advanced levels. This polished all my weak concepts. The material had the best set of practice questions which made me familiar with all types of questions.