The DE Java is damn good fun smoke. Often refer to it as smoking candy, they are that delish. Have not tried the Isla’s. The Tabak Negra is also good but a little different profile compared to the Java, heavier in coffee & spice but also with a sweetness on the palate. Though I've no had the LE Red Eye which is supposed to have more ligero in the blend.
Found the CAO Flavors to be hit-or-miss/inconsistent. The wife and a couple bartenders I help support like the Caramelo Joe, Eileen's Dream, and Bella Vanilla.
The Tatiana’s aren't a bad bang-for-buck infused smoke either. Have taken some Mocha’s and let them rest for a few months in a bag of espresso beans for some additional added flavor. Don't know how they compare to the Isla’s.
Good Luck - Enjoy... and Thank You for Your Service!