This is why coming up with a user guide is going to be tough! We need to decide if this is going to be a guide for everybody, which means categorizing airbrushes from novices to experts. I thought this was to be for novices, and I wouldn't recommend a high end brush for a novice. I made the leap into a dual action airbrush, and the learning curve was is fairly steep. It wasn't until I bought a VERY cheap external mix that I gained the knowledge and confidence to actually USE my 100LG. The more I think about this, the more I lean towards steering people to the Badger 200 series. The 200G can do anything my 100LG can, except alter the line width while spraying.
Anyway, back onto the subject of the guide. I might be biting off more than I can chew, but my vision is to include pictures of the airbrushes, and see what info I can get from the manufacturers. I've already emailed Iwata, Paasche and Badger looking for their permission to use their images and logos, and have even received an yes answer from Ken at Badger, along with some information on the different airbrushes they make. He is very interested in the outcome!
I'm even thinking that it would be nice to turn it into a website, and see where that goes. So, if anyone wants to send me their opinions on their airbrushes, let's get moving!