I can't say I've ever suffered from my choices or that I missed any features. As for "polish" - that's subjective, isn't it? I can access all the features I want quickly and efficiently. It's a tool, after all.
There are some minor bugs with Calc that I'd rate 2/10 in importance - annoyances mostly. I haven't used Excel in a while, but it had annoyances, too.
But even if Microsoft Office is more polished and feature-rich, I still think that the trade-off is worth it - we get data and software sovereignty, privacy and cost savings. The workers need to relearn how to access feature X in the menu or how to live without feature Y.