How effective is Qbank of IFT?

i have Sheweser Qbank but its not looking very effective. Please let me know should i purchase IFT Q Bank or any other Qbank which is more effective?

IFT qb resembles institute qb very closely only with name and number change. I’m solving institute qb and I found it’s quite useful

While preparing for Level 2 I was wondering the same with regards to Test Banks. Only after passing Level 2, I realised that Blue Box examples and EOCs are most effective and very closely resembles actual exam questions in terms of difficulty. CFA Institute test bank comes second but I found it more difficult than actual exam but obviously a must do. The proper way of doing CFA test bank is to not only see the Explanation of correct answer but also absorb the explanation of incorrect answers. These should be only 3 sources for practice. Practice these sources multiple times even you know the answers especially EOCs and BBs and you will find exam easy.