I don't have anything written up but I extensively compared Argo CD vs Flux about 6 months ago and chose Argo CD in the end. I'm really happy with it and currently deploy multiple services to multiple environments (different AWS accounts for each env) in a way that works for multiple teams being able to deploy releases on their own.

I only use it in a pretty basic way for now (Argo CD + Pre/Post sync hooks + Notifications) but I'm starting to look into using Argo Events + Workflows. I feel like Argo CD pulls everything together as a cohesive framework for deploying workloads into Kubernetes, plus there's a built in web UI that's nice to give read-only access to developers so they can see details about their workloads without needing cluster access with kubectl.