“I give them a 3, because there are no other pods I can use for my vape. and they are always sold out.....everywhere. So if I break one I'm screwed. But I bought a 2 pack. That should work.I'm looking for a 510 adapter to be able to switch it up if my pod/vape gets run over by a truck. and it actually did. Just lost the only tank i had....the one that came with the packaging. So I went to disposables for a week and a half....they are terrible. too expensive. this is the way to go....mods and tanks and juice.I also called VaporFi 24/7 customer service and a very nice lady helped me out. They have great customer service. I'm a customer and a fan of VaporFi.”