Master is a good starter, but mine didn't last because I'm clumsy and dropped it, bending the tip shut. Since it was a starter model, that piece doesn't come off, so I had to replace it. I still use the compressor, but it doesn't have a lot of control, though I don't need it, always working on a small scale with acrylics. I replaced the brush with an Iwata. It was expensive, but so worth the upgrade and so much easier to use and clean. If you are just staring out, I don't think you can go wrong with any of these, but the last one will need an air compressor bought separately. The Point Zero will give you the chance to try different feeds to see what you like, but for the price I wouldn't be surprised if quality is lacking. I personally prefer gravity feed for the hand feel and online recommendations for this type I bought into. Sounds like they may have less problems since they work with gravity rather than against, but I don't have first hand experience with siphon feed to be sure.
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