It's been suggested to me that if I was to buy a Joye510 Mega, then I should also purchase some extra cartomizers too ( I think these are attys and a cartridge combined ). On the madvapes website I see that they offer 2.5 ohm carto's, 2.8-3.0 ohm carto's and 2.0ohm, how would I know which one to purchase and whats the difference between them? I thought i knew were I was with the 510, but I'm confused once again because I see that I seem to have a choice between using carts and atty's. can i refill them both? Help please
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