Blistex intensive has been a lifesaver for me, it works quick and it's very effective when your lips are really chapped. For frequent day to day use I like Vaseline just because it comes is so many great flavours.
(Original post by LouboutinLove)
Lucas' PawPaw ointment. Not strictly a lip balm (it has many uses), but literally the best ever. Was recommend to me by a model I know who has huge lips and they keep hers looking perfect.
For something more compact I like Burt's Bees original or mango lip balm.
Totally second the Pawpaw bit! That stuff is amazing for everything!
I use a really good balm called Chopsaver, It's quite hard to find in shops (try a musical instrument shop, they have it sometimes) but it's really good. I'd say it's better than Carmex for moisturising and doesn't leave your lips all greasy and horrible (which is very good for brass playing, which is why I buy it).