Well depends, are you willing to take the time to learn how to build your coils? If so than a rebuildable of some kind. If not than I'd go with the fireluke, but you will be limited to what your coils can handle, the coil it comes with in the box says it goes to 140 watts, but it's rated higher than what it does, bout 120 is the real max on that one. I'd suggest learning about building and ohm's law and getting an RBA of some sort, I've heard the Mutation X is a pretty good one, but I don't got it so take that with a grain of salt. In terms of clouds though, typically factory coils cannot compete with your own. Someone else might be able to help more, cause I tend to vape ~60-70 watts, so I'm not exactly a fog machine sorry. If you want to build your coils check out http://steam-engine.org for a little help.