Best currency converter addon! It has a very intuitive configuration UI and works on all sites I have tried. It also allows you to adjust the conversion rate by a certain factor (Custom Display -> Conversion Rate) although the naming could have been slightly better. The same goes for the "Importang Digits" settings which is awesome for rounding off / trimming of converted values but naming could be better as well. These are minor complaints though and I'm still giving it 5/5.