peacemaker: if you posted this question in the Painting and Airbrushing forum, you would get a LOT of replies. However, I will reply here.
I happen to own an Iwata HP-C Plus airbrush and I love it. The only drawback to it (besides the price) is the size of the colour cup. If you are building larger models and need to spray larger amounts of paint, that can be a problem. I build 1/48 scale aircraft just to give you an idea and I also have an HP-BCS for larger area coverage. Your call.
Rich