Deployment of helm charts is really fundamental to any software packages to our Kubernetes/docker containers, and without Helm, I cannot imagine how else to manage software components upgrades. When it works, it works great, when it doesn't - the world has not come to an end, there is rollback, and it's great, but troubleshooting does take time. And there is a learning curve. But it be worth it.
We didn't really need support, but the open-source community seemed responsive and informative when it came to issues. Many cloud native consultancy companies (including ourselves) offer support for Helm.
We have a natural trending to use what is a reference in its space and Helm has being leader in its area for a long time. Since it has all features we need didn't make sense to us to invest time on researching and testing other alternatives, so Helm was our first and only tool in regards of automating deployments on Kubernetes