Hi all. I hope this isnt viewed as threadomancy/threadjacking, but I have a similar airbrush question, and didnt want to start yet another thread with basically the same title. Is there any way to make a kind of sticky airbrushing advice thread, which collates the distilled knowledge of the arty brains present on this site?
Anyway, I'm currently using a Tamiya Sprayworks single action airbrush, and although it's nothing fancy, I have been fairly happy with it. I've only used it for vehicles and base coating minis, and for that it's been fine and dandy. However, I'd like to get into more fiddly stuff with the airbrush, and I've found that with the Spraywork I can only manage about a 5~6mm wide line at the narrowest, and that's if I reduce airflow to as low as possible and risk heavy splatteration.
Can anyone please recommend a decent airbrush for doing finer detail work? I know I'll need a double action one, but I'm not clear about what other specifications I should be looking for. I'm in Japan, so Iwata is dead easy to find, whereas Badger is a bit of a bugger to track down. (e.g. Amazon Japan has 50 hits for "Iwata Airbrush" (イワタ エアーブラシ) and 0 hits for "Badger Airbrush"(バジャー エアーブラシ)) Budget-wise, up to about 15,000yen (um, 150bucks, US?) is about where I'm aiming. Obviously, the cheaper it is, the happier the missus will be.
ps. by "more fiddly stuff" I mean things like zenithal highlighting focusing light on certain parts of the mini (head, fr example) and also I want to do some freehand on my vehicles (purple lightning on my dark eldar ravagers. Cheesy, I know, but nothing says "evil whooosh" like purple lightning

)
Thanks a lot in advance for any advice y'all may have. I think I could get into this airbrushing malarky, but its such a big ocean of Stuff I Dont Know that I'm a bit intimidated...