I have both a full size Provari and the Smoktech VV Gripper.
The Provari is a variable voltage device built to last for years and works flawlessly with nearly any juice carrying device. You can't beat Provape's customer service and 1 year warranty; they will also continue to service the Provari even after warranty expiration. That's something I believe everyone should consider when comparing mods.
Yes, it is expensive initially (beginning @ $165), but nearly all Provari owners agree enthusiastically that it is worth every penny. It has been considered the gold standard to what other mods are compared to. It is available in a Mini form (same inner components as the regular, just shorter with shorter lasting batteries). Which is more important, size factor or how long you can go before changing out a battery? Get the Mini and carry an extra battery with you.
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The Smoktech VV Gripper is small, comfortable to hold, lightweight, stealthlike, and easily pocketable. The battery it uses lasts all day. The rubberized finish feels nice to the touch. The display is sharp and the 3 button control makes it simple to change voltages. It's only possible downfall is the plastic case likely not being as durable as a metal case would have been. Yet, it's cheap $50 pricetag compensates for this.
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