For me it's the next one. I'm always changing up what I use when I see that next shiny, new, promising atty.
I have been using the Profile Unity for a long time but recently shelved it due to mine just pissing everywhere when I wick it. Not the atty's problem but mine. I just don't have the patience to pander to the little fucker anymore.
Love the Profile RDTA, loved the Kylin Mini V2, love the Aromanizer attys. Loved the ZQ trio for RDL and MTL. Loved the Aspire Neeko for MTL. Loved the Goon for RDA,
It'll still be the next shiny one that I prefer though.