Having to deploy and manager Clickhouse put me off a little - OpenObserve uses it's own binary format, so there are zero external dependencies, making it super easy to setup. Maybe Clickhouse is nothing to worry about, but it's something I've never used before.
Also, I wasn't sure if Zookeeper was mandatory even for a single-server SigNoz install?
ClickHouse doesn't use ZooKeeper anymore, and if you're just using a single server you don't need to worry about coordination :)
ClickStack/HyperDX is a polished OOTB stack that has an all in one image you can deploy to get started, so you don't need to worry about the ClickHouse side until you need to really scale (which is where ClickHouse really shines).
Also, I wasn't sure if Zookeeper was mandatory even for a single-server SigNoz install?
SigNoz UI certainly looks more polished tho!