I wanna know about this fluid head thing as well. Here is what Coast has as benefits...
Micro Air Control (MAC) Valve
A breakthrough technology, the Micro Air Control (MAC) Valve enables infinite control of the airflow at the head of the airbrush, which is different than just regulating the air pressure at the compressor.
• Equipped with a NEW taller trigger design and ergonomic rolling square platform, that gives better control with detail and creates a comforting platform.
• Crown Cap docking port: Prevents loss of your needle cap when removing for finer detail work.
• Solvent resistant Needle Packing
• Single Piece Needle tube & Auxiliary Lever
• Lets users spray a coarse stippling effect to full atomization with a quick turn
• For fine line or detail work, it can be adjusted to create the optimum airflow for maximum control of the paint output
• By fully opening the MAC Valve, the airbrush can quickly be cleaned during color changes or for wide background spraying
• Using the same matched-head assembly as the other trusted Custom Micron airbrushes, the Custom Micron CM-C Plus has the same precise feel that's entirely unique to a Custom Micron airbrush
• A breakthrough technology, the Micro Air Control (MAC) Valve enables infinite control of the airflow at the head of the airbrush, which provides even more control of stippling, fine details and finely atomized background spraying
• The new solvent-proof needle packing allows for the use of automotive or other solvent-based paints
• The funnel shape of the redesigned gravity-feed cup lets the airbrush be used effectively with only a couple drops of paint, ensuring a fast and thorough clean up
• A cutaway handle enables users to grab the needle-chucking nut and quickly pull back the needle to flush paint out of the cup and paint passageways for a quick and easy clean up