The obvious difference is the size. If you're going to spray large areas, like I tend to spray the whole model white, then the bottle comes in really handy. It's not fun to keep re-filling the cup, especially in my case, as I tend to mix and thin down paints a lot. The cup does come in handy for small touch-ups here and there.

I use a Paasche VL and love it. If you damage a part, or bend the needle, you simply go to the hobby shop and pick up a new part. It's almost impossible to destroy it completely. The dual-action system gives you a lot of flexibility, especially for painting small areas, patterns, etc. Good luck with whatever you choose.

I'm sure they do, but you're not obligated to get the same brand. You can use your airbrush with just about any compressor. Just make sure you get a good compressor that doesn't create much moisture and has enough power/capacity to keep providing all the air you need. You should be able to buy an adaptor to connect the airbrush to it. While at it, invest in a long hose and a decent in-line moisture trap. That should do it.

Nick

I have a Badger Cresendo (double action) and it's been pretty reliable. Pretty easy to dis-assemble and clean after use. The needles, tips, and nozzles can be bought at Michaels and other craft stores if you damage something just like the model Ahmed mentioned.

Devan