What is really the difference between the Iwata lines (Custom Micron versus Hi-Line versus Hi-Performance)? I am sure this topic has been tackled thousand of times in this forum, hence my apologies if this is recycling old discussions. It is something however I need some good advise on. I have been spraying with my Sparmax Sp-20x for a while, but I simply don't get the fine lines that I was hoping for, no matter what configuration and technique I am applying. The best I can achieve is a solid line of 1 mm diameter, which is still too rough for what I am aiming to do and achieve eventually. Hence, it must be the airbrush that "prevents" me from going really to fine details. Also, I find the trigger control of the Sparmax rather laborious and sometimes unpredictable. I never had a chance to try out something as high-end as a H&S Infinity or a Iwata Custom Micron, so I don't know the difference (I presume those triggers are soft as butter...). I am still scratching my head regarding the real differences of those different lines... I see that many of them have 0.2mm needles... but why are some better suited than others for great detail? Can I, in theory or in practice, achieve the same with, say, a HP-A Plus as with a HP-BH? Basically I am looking for simple pointers from you so I can make the right purchase. I am also ok to buy a Custom Micron or an Infinity, if that's what required to become a detail master.