The Paaxhe VL is a tried and true veteran, parts, needles and cones are available everywhere and they are a very reliable easy to use airbrush. The Iwata is a great piece, but for hobby use I dont know that you would get the benefit by spending the extra money.
I shot with a VL for a lot of years, then I went to a Vega, and from there now I have a very high end Iwata gravity feed airbrush that I LOVE LOVE LOVE, but it is a very expensive airbrush.
I would recomend the VL