vaping their DIY blackberry flavor right now (at 2.5%). Friggin' good stuff!
Otherwise, Copper Creek Blackberry or HHV Crackberry are excellent as well.
Another vote for HHV Crackberry
So on the opinions based in this thread I have ordered some Crackberry and Black and Blue from HHV. I also ordered some Blackberry and Orange Dream Bar from MBV. I must say I'm delighted in the price of MBV juice ($7.50 for 30ml), hope it's as good as folks say :-)
Another vote for AiV. But I'm also waiting for some blackberry from Velvet Vapors. Haven't tried it yet but I've long enjoyed their other flavors such as waffle and bear claw.
So after letting my Blackberry age for a week or so I broke them out. Crackberry from HHV is good as well as the Black and Blue. The blackberry from MBV though is OMG good. I got a 30ml bottle and it's the best so far. Still have to try AiV and Coppercreek and what ever else is out there but I'm definitely getting more MBV Blackberry :-)
I've always liked Blackberry Ice Cream from Kick Bass Vapor. Creamy blackberry (primarily blackberry), sweet but not overly sweet, and a slight cooling effect (not menthol).
I really liked Virgin Vapor's Blackberry Vanilla Swirl--but you have to let the bottle sit without the top for a couple of days. After a couple weeks, it's a really nice, true Blackberry, with a creamy vanilla on the exhale.
Potion Vape's Blackberry Midnight is also a really natural-tasting blackberry with a sweet (honey?) finish.
My wife really enjoyed the MBV Blackberry, until she tried AiV Twas Brillig... She fell in love with this one. Then along came NETcom's Blackberry Burley and POW! She just can't get enough of this one and vaped it exclusively until it was gone.
She had me order her a 60ml. Now, that was on Oct. 22 and we're still waiting due to the extreme popularity they are experiencing but the wait is well worth it!
It was Blackberry Burley that got her vaping exclusively! She's gone over 3 weeks with only a couple relapses to the smokes but as long as I can keep it in stock, I'm sure her cigarette days are behind her.