Which tool is best for online user testing [on hold]

I have small eshop end I try to improve my information architecture. I want to understand my customers and they behaviour on website.

I planning buy one of online testing tools and I want to know which one is best of them. I found these tools: UXtweak, hotjar, validatelly, smartlook, fullstory.

Tools have similar features but via UXtweak I can conduct task-driven study. Now it is a open beta.

I think that is the best way to know how to set task and get to know customers behaviour.

Do you know online platform with task-driven study like UXtweak? https://www.uxtweak.com

Let me know your experience with online testing platforms. It designed should be primarly for eshop.