You guys are the ultimate enablers. Trouble is everyone is recommending something different

have been looking at mods and tanks in a what am I missing way. But I know where that leads "well I want another as a backup and now the old ones don't do the job anymore and and and" then I'm out $500 by the time it's all over til shinyitis hits again.
Honestly I don't know how the new vapers do it. I'm overwhelmed with all the choices and that's with me knowing what I'm doing. When I first started it was cartos and occasionally shitty tanks (anyone remember kanger t2's?) with egos or twists. Now there's at least 30 different subtanks and who knows how many mods with different chips and boards and ....