I've sucked a good few drop-ins with varying succes and my Kabukies are still being used. As for my RTAs, an Ares was a disaster, Eden mods Rose3 and kayfun 5² are good but none of them as good as my Prime.I think dropins suck and have myself gone thru a dropin phase.
Wrapping my own gives me the best flavor and value.
Jim
Incidentally, I refer to my Rose3 as my drop-in, it has a perfectly flat postless deck with two coil holes tightened with grub screws