I love this flavour, it's supposed to be peach and nectarine, it tastes mostly like peach but it's an incredibly crisp and refreshing flavour. Doesn't taste too sweet either. Used to buy Mango Loco but if you gave me a choice between Monarch and Mango I'd go with Monarch. Definitely my new pick, will be ordering from here, glad they've added it since it's much cheaper!

(Fun fact: In America, this flavour is called Monster Papillon.) Only had the USA version twice, with the recent one being given as a freebie ordering online from a USA import store. I'd say the UK version surprisingly slightly tastes better... And obviously cheaper!

Quick delivery and services will defo be ordering again 

I bought this for my girlfriend as were both slight caffeine addicted, she loved it. Havent found anywhere that sells monarch as a 12 pack for a decent price but here