Both are made with real, honest-to-goodness sugar, not HFCS. They taste better and are a fun treat.
As a related note: There's a whole subculture of soda geeks (I presume you are as not-surprised as I was to discover this ;) and it's a fun mini-adventure to explore some of the things one can buy (i.e. vanilla coke w/ real sugar)
If you don't want to pay nearly double the cost of the product just to ship Mexican coke via Amazon, try your local Mexican grocery store. The one down the street from me in Chicago (at Ashland & Beach) sells cases of 24 bottles for $24.81 including tax.
There are two varieties of Mexican Coke I've found in the wild (i.e. Seattle corner stores), the 12 ounce bottles linked above and 500mL "Medio Litro" bottles. The Medio Litros are closer to a 20oz bottle while the 12 ounce bottles are the same as a can in terms of capacity.
In Portland, OR they can be found in convenience stores and Walmarts for 99 cents/bottle. If I recall correctly, the employee-owned Winco food stores carry them for 88 cents. I haven't checked to see if anyone will give a price break for buying a case at a time. (Proof I guess that I'm not a Mexican Coke addict ... yet.)
Here in Louisville, the tiny grocery down the street sells it for $1/bottle, not even a particularly Mexican area. Lot of coffee shops here have it too for a bit more.
A) Mexican Coca-Cola (sold in tall, skinny bottles: http://www.amazon.com/Mexican-Coca-Cola-Drink-12-Ounce/dp/B0...) B) Kosher Coca-Cola (only available around Passover in select markets like NYC & Miami - look for the yellow cap on 2-liter bottles)
Both are made with real, honest-to-goodness sugar, not HFCS. They taste better and are a fun treat.
As a related note: There's a whole subculture of soda geeks (I presume you are as not-surprised as I was to discover this ;) and it's a fun mini-adventure to explore some of the things one can buy (i.e. vanilla coke w/ real sugar)
See: http://www.sodafinder.com/products/coca-cola-coke-vanilla