received mine a couple days ago and just let it sit there but randomly decided to try it out. first things first, i threw away the pre-built wick and coil, washed it out because it smelled like machining oil, switched out the crappy loose fitting driptip, and wrapped dual coil 3mm ekowool with 3 wraps of 30 gauge to give me .7ohms. you def. wanna drill out a second air hole and increase the diameters of both holes. aesthetic differences between the chimbus and the nimbus: longer top section on the chimbus and unpolished (looks brushed), and the 4 stripes on the top are more spaced apart. what im trying to get at is people that know what a nimbus is won't be fooled that it's a nimbus. the posts also require allen keys which isn't too bad but the thing is so tiny that i know that losing it may be a concern for some. the holes in the posts are also much smaller on the chimbus so i don't see quad coils working on it (i can barely fit them in my nimbus) and the drip well is considerably smaller as well. performance wise, it really just depends on your build. the 3 posts def. make dual coiling easier so if money is an issue i would suggest picking this up over say an igo-L but yeah, the real nimbus is hands down worth every penny.