I received my Ego Mega carto kit today and absolutely love it!! Now Im looking to buy a 510 model. Still being rather new at this, I wanna know what parts are really interchangable. I really like the convience of cartomizers, but if I buy an joye 510 cartomizer kit, am I able to later use atomizers and cartridges? The company I ordered from sent the wrong extra cartomizers for my Mega kit. Bummer cuz I was anxious to try different juices. They sent 510 dual coil. Can I just buy any 510 joyetech battery to fit them?