I have a Blu set, and recently bought a Volcano set for my wife, since I've not been entirely pleased with the Blu. The big difference between Blu and Volcano (since the parts are interchangeable) is the atomizer. The Volcano atomizer draws easier, requires less flow to activate, and "burns" consistently and steadily through the entire draw -- which leads to better vapor. With the Volcano, I get a good strong throat hit every time. If you have purchased a Blu, do yourself a favor and upgrade to this atty. I'll still be keeping the Blu (after all, I have a complete set), but I've upgraded the atty and will upgrade to other Volcano parts as time goes on.