Britvic Tonic is the number 1 Tonic in Peru :)
Besides this, its starting to get more and more common elsewhere as well, bespite the large competition from Fever-Tree, Fentimans and the other huge worldwide providers of tonic.
This tonic actually have a perfect balance between the bitterness and the acidity and sweetness.
It has however, a lemon-ish taste which means you need to be careful with the Gins you pair it with. It can influence the taste and balance in the Gin.
The bubbles however, are fine and easy on the tongue.