I'm living in a foreign country, so the ability to quickly translate many webpage is crucial to me.

I use chrome for many year and the translation there is amazing.

I migrated to firefox this week and but was very disappointed with this extension, and unfortunately I will go back to Chrome.

The biggest differences are, that unlike Chrome, if you want to translate a page using this extension:
1. you need to to several clicks (like choosing a language).
2. the translation itself is much slower than chrome.
3. when navigating between paged of a website, you need to constantly click the translate.
4. 30% of the times, clicking "translate" doesn't work.