New project for soap API requests

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API

SoapUI

Hi All,
I want to start a new API project for Soap ui Requests.
Want to know which tool is the best one to use and project can be easily maintained. We are also considering specflow API tests! but not sure if this is right framework to use.
Also, we have Teamcity as our CI/CD tool. Once Our project is working we want to integrate this into teamcity and run automated tests when needed.
Any pointers would be much appreciated.
Thank you.

What I have tried:

Still considering which tool fits the purpose. Our API's are still getting build. while they dev is building we need to investigate and come up with a Tool that we are going to use for our project.

Looked at
J-Meter -
Soap UI