I'd highly recommend it. I've got a coil master kit ( not sure which version it is though ) and it's fantastic. It gives you every tool you'd ever need to build coils and it's super handy if you're traveling and need to build. I picked mine up for $70 AUD and it was worth every penny. Unfortunately the kit only comes with an ohm reader ( well mine does anyway ) so I'd recommend picking up the Geek Tab 521 mini for firing and perfecting your coils instead of doing it on a mod.