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I would say bumblebee has a decent one. I used to love to vape but it got to expensive.

Honestly I can't figure this out... But they barely get my high unless I take like 20 really strong hits off them. So I typically avoid them.

I have tried Kurvana and Brass Knuckles as well as a few other more homemade models.

That's interesting, I'd avoid them too if they didn't work for me lol

im not a huge fan of the carts, but i own the evolv plus XL which is made for concentrates, and it is by far my favorite vape that i have used, and its only $40 or so pretty much anywhere ive seen them.

Nice I'll have to check it out for sure