The more I use the assorted variety of clearos available, the more I become and advocate of the wise words said by @
Ninjaassasin1983 above - "Plug and Play" !! OK yes, it's fun and gives a satisfactory sense of achievement to recoil and rebuild a clearo, but it's not the be all and all. After all, why go to the trouble to make coils, only to shove 'em in a clearo, when you could be taking the same trouble and shoving them onto a kayfun/taifun/russian/ Aga/Genesis, all of which will outshine any clearo? Replacement clearo heads are cheap enough. So, I believe that any clearo, that you can just take out of the packet, fill with juice,mount to your device, and become a happy and satisfied vaper, is the clearo for you. For me its the protank/davides because I just get along better with bottom coils. Any clearo that requires 'tweaks and faff' to work decently is, imo, shite! If a clearo works perfectly, out of the box, then no harm tweaking, if you have a mind to.