Hi,
We have multiple people at SmokTek use and love the Eleaf iStick 50W APV. In our experience, it's a very sturdy device. It works great with the Kanger Subtank! The Eleaf iStick 50W is capable of producing much more vapor than the iTaste MVP 2.0 Energy addition - given that its maximum power is 38.5 watts higher than the iTaste MVP 2.0.
Best regards,
Brad