Since I just did a review of anoher vendor (my first review), I figured I'd do one of the other place that I've purchased multiple juices from. 
I have purchased several flavors (via the sample pack) from DIY Flavorshack and all have tasted like what they are supposed to be. A few flavors I ended up not caring for but that wasn't because the flavors were 'off', they were just flavors I thought I'd check out and they ended up not really being 'my thing'. I am completely addicted to the ones I liked though.
Vapor production = excellent
flavors = spot on
throat hit = good (my double-flavored caramel is a little harsher than the others I've tried but still very good)
My personal favs thus far are:
Bubblegum (absolute favorite, tastes like old school bazooka, my all day vape)
Coffee (second fav, rich flavor with a hint of sweetness, my morning vape)
Chocolate
I have purchased several flavors (via the sample pack) from DIY Flavorshack and all have tasted like what they are supposed to be. A few flavors I ended up not caring for but that wasn't because the flavors were 'off', they were just flavors I thought I'd check out and they ended up not really being 'my thing'. I am completely addicted to the ones I liked though.
Vapor production = excellent
flavors = spot on
throat hit = good (my double-flavored caramel is a little harsher than the others I've tried but still very good)
My personal favs thus far are:
Bubblegum (absolute favorite, tastes like old school bazooka, my all day vape)
Coffee (second fav, rich flavor with a hint of sweetness, my morning vape)
Chocolate