Hi,
According to me, both are good in their own way. Question banks are detailed in nature. It includes previous years question papers with solutions in toppers own handwriting. Whereas, sample question papers include 5 solved papers and 5 self-assessment papers covering important concepts from an examination perspective.
Oswaal question bank is very good for studying. It can help you to score 80/80 in 4 subjects of Science, English, Social Science & Mathematics. They are so good. But Sample Question Papers are the best practice sessions for all students. Once you through with detailed Question Banks, use SQP to enhance by writing style for examinations. So, they both are good in their own unique ways. Students should check their preference & needs & use them accordingly.
Hope this helps,
Good luck.
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