I've been vaping for a few years now but still a novice at a few things. One being RDA's. Now I'm the kind of vapor who since I started always wanted the plug n plays devices.. I hated punching cartos and doing that route.. Then the Novas came around and that changed everything for me.. From there I got as high at using the PT2 and have no knowledge of any better tanks. But what I'm here for is to ask about RDA's Pros and cons over using replaceable coils. Are they easy to set up? Better flavor? Cheaper then buying coils for other tanks.. I'd love to know.