I bought this airbrush last week, the AB-180

It was a great price just £27.95, it seems well made, it is chunky but has a good solid feel to it, I haven't used it in anger yet but have tried it out on CS10 paper and it appears to do a good job, from fine lines to a good wide spray, it has a 0.2mm needle and nozzle which you can buy replacements for also independent air and paint adjustment. I also found that it was very easy to clean, for acrylics I just rinsed the cup out and sprayed clear water then back flushed it, I repeated this a second time and bingo it was clean, just for good measure I ran some A/B cleaner through it and everything looked good.
Cheers
Pete.