I love these so much I have five of them - three from the original range and two 'intense' shades. I find the original shades are much sheerer, and can be applied without a mirror, but the intense shades provide opaque colour that needs more attention when applying.
My favourite is 'Heftiest Hibiscus', a very pretty orange-red that goes on smoothly but has a great colour payoff.
I have the mega melon shade, after seeing it while looking at the duty free counter I loved the smell. It doesn't taste like anything, and the colour is quite sheer but it is buildable. I lost it inside a coat pocket for a few months and was absolutely over the moon when I found it again! Absolute hands down favourite lip balm.
Tips: The top of the cap can be used as a mirror if you don't have one handy!