You might try omvapor's cafe #7. It's described as a cappuccino, light cream and caramel. It's not a pure coffee flavor but to me the coffee comes through and the caramel doesn't overtake. Out of several coffee type juices I've tried this is one of the few that doesn't linger in my cotton forever. It also doesn't seem as prone to burning as fast as most coffee or chocolate vapes seem to. In the past my experience has been it's better as a cooler vape, but soon as you turn up the heat a little it's fine, it's fine, it's burnt.
Om's selling them for $7/120ml bottle currently so wouldn't cost you a ton to try it. I think they have 30ml bottles also. Might be worth checking out.