Help choosing a nail stamping machine & plates

Hi everyone! I'm new to the nail art world. I have seen nail stamping machines online I was wondering which one everyone else was using? Which is easiest to use? Also I see that most of the machines have hexagon shaped plates that come with them but I see round plates for sale online as well. Can the round plates be used in the nail stamping machines? Thanks for your help! /emoticons/[email protected] 2x" width="20" height="20" />