I’m on the wait list for Tana and looking forward to “having a play”. But in Obsidian I’m only just getting into Dataview and (correct me if I’m wrong), most of the data filtering and manipulation you can do in Tana with SuperTags can be done with Dataview. I’m also Mac-based and use Alfred for “snippets”, so it’s easy for me to use a shortcut to create the frontmatter/YAML fields for a specific type of note that I can then populate and search/manipulate/report in Dataview.
Although there is a lot of cross over between Tana and Obsidian in functionality there are some fundamental differences in the approach. Tana - Online, proprietary, supertags = usable by teams, easy data manipulation, very limited interoperability, not so secure/private, not so extensible. Obsidian - Markdown file format, great API for plugins, user hosts/owns their own data = great interoperability/legacy, huge ecosystem, very secure/private, but a PERSONAL knowledge management tool, no team capability, can be difficult to use in corporate environment where tool installation is controlled/limited.