The Aquablast process is superior because it is dust free and offers a finer and softer appearance to the finished look.
The key to aquablasting, also known as vapor blasting, is that the finish is produced through a flow of water, giving a finer finish due to the flushing action of the water. No media is impregnated into the alloy, nor is there any dust created by the break-up of media, unlike dry blasting where the finish is produced by sheer force of media impact.