I loooooove Carmex. So much. I've been using this brand for around ten years now and I consider this brand to be one of my Holy Grail lipbalms.
I love that they're very accessible to find (although the UK seem to have more varieties than here in Canada), and they're also budget friendly. They also have SPF 15 which is pretty decent for a drugstore brand. The Pomegranate scent is my favourite, but I do like the original unscented version as well.
I prefer the chapstick formula- it's the thickest in texture and I actually like the tingle it gives. It's my go to lipbalm whenever I'm on a flight because my lips just don't get dry with this product.