What are some best ad spy tool for ecommerce?

Hi friends, have you tried any ad spy tools to find a niche? There are many similar tools with almost the same features, such as AdSpy, BigSpy, poweradspy, etc. I don't know which one is the best.

Do you have any recommendations based on real experience? Thanks in advance.

AdPlexity eCommerce

I used to have great success with Anstrex, but for N2S and not eCommerce. If I needed this type of tool today, I'd start there.