Hi and welcome,
It depends on what you like and how you build.
What have you been using up to this point?
Are you attempting to stop smoking cigarettes or is this just a hobby?
What wire do you plan to use? How many amps is your battery rated for?
How will you be wicking? SS mesh? cotton/rayon/silica?
What is your actual budget for the
rda?
Cheers
I