I have the Badger 200 NH, and it is a pretty good brush. It uses the same needle and tip as their Anthem 155 double-action so the painting quality is excellent, but being single action the trigger control is a lot easier. Fine line performance is quite good as well. The first time I used mine was doing free hand camo on a 1/72 Tiger tank, and I found it pretty easy to do.
Another single action airbush to look at is the Paasche H which I also own. Although the Badger should theoretically have better atomization and produce a better paint job, to my eye I don't see any real difference, both are excellent. Possibly the Badger might give a finer line, but I'm not too certain of that either. I haven't tried 1/72 camo, but I think the Paasche H would work fine on it, and certainly the bigger stuff. I do find the Paasche to be a bit more convenient to use than the Badger because the needle adjustment is in front under the tip rather that at the back end of the air brush.
Although either the Badger 200 or the Paasche H would be excelllent, I would say go for the Paasche H. Had I purchased a Paasche H as my first airbrush, I don't think I would have ever bought another. If you ever find that you need some fine line capability that the Paasche H t cannot deliver, you can always get a detail brush like the Badger 100 G for the detail work.