Yip admars in my opinion Fever-tree is the best tonic water and my preference is the Mediterranean but all Fever tree tonic's are very good my only gripe is it is expensive compared to other leading brands. You should tell your workmate if they like Gin to try Brockmans gin mixed with Fever-Tree Mediterranean Tonic, slice of red grapefruit and ice it's lovely
although hubby does not like ice with his. Hubby used to say Gin was not for him but once he tried this he soon changed his mind.
Another tip is to slice the grapefruit and freeze it.
I tend to stock up when when fever tree is on offer.