If you are looking for the most reliable and the quietest air compressor in the world, then take a look at the Curtis NXB series rotary screw air compressors. They have a whole line of compressors from 5HP to 250HP depending on your needs. Remember, before buying an air compressor, make sure that it is right for your applications. Too big of a compressor is just as bad as too little of a compressor. Check the CFM requirements of your facility and compare it to the CFM capabilities of your new Curtis NXB series compressor.