I've tried several coffee flavors...some of which have been suggested already. A few were decent but nothing I'd vape all day. Most seem way too strong and chemical for me. I was placing an order to Goodlife Vapor for a big bottle of Deadly Sin (good stuff) and saw a flavor called 925...(9 to 5...get it?) I remembered seeing a review at some point so I got a 30 ml bottle...not remembering if it got a good review or a bad one. It's really really good. As close to real coffee as I've tried yet. It's not sweet but it's not like strong black coffee either. Not bitter....maybe it has some creamer in it? Not sure, but if you like real coffee, you'll love this.