LF - What's the difference between their normal and "XO" eLiquids?

[Al Capwn]

E Liquid - E Liquid 30ML - PG - Others

They do a range under the heading "E Liquid" but they also do another range under the "E Liquid XO", it's probably a stupid question but what's the difference? The XO range seem to be about £4 extra a bottle (30ml anyway).

Thanks in advance

 

[Papa Lazarou]

I'm sure Liberty Flights would be better placed to answer any specific questions about the ranges but as I understand it, the standard juice is Chinese produced (made by Hangsen) and the XO range has been mixed in the UK by Enjuice.