That's a hilarious slipup Pitchfork. I seriously thought you were trying to be helpful (help people stay away from Latakia, which is what anonymous groups are supposed to do, isn't it?)
It's actually a little more of a complicated question than "what has the most Latakia?"
Latakia in itself doesn't get you the flavour of an English blend. I've tried it, it isn't bad, but one of my best Latakia experiences was mixing straight Latakia with G.L. Pease Cairo, which is mostly Oriental tobacco. Basically I was making what you get with most English blends. I found 50/50 was less flavourful than a smaller portion of Latakia (though apparently Star of the East is 50%, so maybe I was just doing something else wrong, or maybe my tastes just changed). If you want to figure out what "maximum Latakia" is, you may as well blend your own.
The best advice I've read is to make sure you write down what goes into each small batch, otherwise you'll end up having a fantastic smoke and have no idea how to duplicate it.
My favourite pre-mixed blends are Star of the East, Captain Earle's Stimulus Package, and G.L. Pease Quiet Nights.