If you are talking about the performance of the iclear clearomizers that come with the kit, then yes, clearomizers are somewhat of a jump from your standard atty/cart head combo. the iclears with the kit are top coil, meaning to get best performance you might have to tip them upside down every once in a while to ensure juice stays on the coil. Personally I'd invest in a bottom coil design like the Kanger Evod. There are others out there, I just know from personal use the Kanger EVOD and protank show good performance.
you should know, before buying an EVOD, that the vape is cooler (which some people like) and many people find the taste to be much more muted than the Iclear30,,,,,,