Which AWS cost optimization service provider are the best?

Hi,

we want to optimize our AWS costs but want to focus on our core business and not managing the AWS cost "features".

We identified following cases and service provider. Any more service provider recommendations or even experience with the those mentioned?

1. spot instanz management - Spotinst (https://spotinst.com/)

2. reserved instances management - Parquantix (https://parquantix.com/)

3.AWS improve transparency & governance - cloudability (https://www.cloudability.com)

Thank you in advance!

Best Alex