Coffee vapes are my favorite flavor. I've tried nearly a dozen vendors and have 3 favorites. I tend to like a lot of cream and sugar in my real coffee, so that should give you an idea of what I like in a vape. Your mileage may vary.
Virgin Vapors ECO Virgin Organic Kona Velvet Milkshake http://www.virginvapor.com/products/eco-virgin-organic-kona-velvet-milkshake
"It's sweet, creamy and buttery with notes of caramel and rum all balanced out by a nice strong shot of Kona Espresso" -website description. And its all true. Probably the smoothest, most flavorful, and most satisfying of ANY juice I've found. I liken it to a Starbuck's frappe. An all day vape. It arrives already steeped 2 weeks so should taste good on arrival, but it also continues to improve with age. It is 100% vg, a clear light amber in color, and doesn't seem to clog cartos, altho the juice does darken appreciably with age (nicotine effect?). Annette will mix with a thinner vg base if requested. I will always have this juice in my daily rotation. Price: $15/15ml
I have not tried them yet, but she also offers
ECO Virgin Caramel Kona Milkshake and a couple of others. Her most famous juice,
Kona Coffee Milkshake has been out-of-stock for a few months due to ingredient shortages; it won 3rd place as most popular 2011 juice poll.
Copper creek Coffee http://www.shopcoppercreek.com/Copper-Creek-Coffee-_p_13.html
A highly regarded coffee juice. Advertised as a slightly sweet coffee and very good as mixed, I find it to taste more black, so I add a tad more sweet cream flavoring (
Sweet Cream from MyFreedomSmokes) myself to match my real life coffee. Simply excellent! Initially ordered 40/60 ratio and got huge vapor. Available in 100% vg or any pg/vg combo you'd like. Needs to steep a few days for best flavor. Excellent at 3.7v, great at 5v. Will always have this juice in my rotation. Price: $9/15ml
Vaperite Organic Kona Cream http://www.vaperite.com/vaperite-e-...ces/organic-flavored-juice/organic-kona-cream
Very similar to the above Virgin Vapors entry, it's an excellent juice, I happen to like the KVM better. This needs to steep a few days, although it is available pre-steeped for additional charge. This is a darker juice. Available in all vg, 50/50, and 70/30. Price: $12/18ml