Anyone know about Hawaiian Kona coffee and if it contains more caffeine? I like the taste of it
I came across this, but I have no idea what the numbers mean
Doesn't seem to be a huge variance regardless of what they mean 
Caffeine Content in beans and blends
(Source: Newsletter--Mountanos Bros. Coffee Co., San Francisco)
VARIETALS/STRAIGHTS
Brazil Bourbons 1.20%
Celebes Kalossi 1.22
Colombia Excelso 1.37
Colombia Supremo 1.37
Ethiopian Harrar-Moka 1.13
Guatemala Antigua 1.32
Indian Mysore 1.37
Jamaican Blue Mtn/Wallensford Estate 1.24
Java Estate Kuyumas 1.20
Kenya AA 1.36
Kona Extra Prime 1.32
Mexico Pluma Altura 1.17
Mocha Mattari (Yemen) 1.01
New Guinea 1.30
Panama Organic 1.34
Sumatra Mandheling-Lintong 1.30
Tanzania Peaberry 1.42
Zimbabwe 1.10
BLENDS & DARK ROASTS
Colombia Supremo Dark 1.37%
Espresso Roast 1.32
French Roast 1.22
Vienna Roast 1.27
Mocha-Java 1.17
DECAFS--all @ .02% with Swiss Water Process
These numbers may be correct for the coffee offered by Mountanos Bros. Coffee Co. but they probably are not necesarily correct in a generic way. Caffeine will vary from farm to farm and plant variety to plant variety.
As a general rule robusta has approximately twice as much caffeine as arabica.