There are several other ready to drink coffee in this type of packaging, but most don't taste like coffee at all due to it being too sweet. I tried the cafe latte version in South Korea and I loved it! There was the subtle bitterness and the taste of milk and sugar isn't too overpowering. I even felt the caffeine kick in after a while. It's as good as it gets for coffee of this type :)
I tried the latte. It has less milky taste than I'd expect from a latte and it has a strong coffee aftertaste. Recommended for coffee lovers who are all about that strong coffee aroma, almost Nescafe-esque in a sense but it doesn't taste "unnatural".