Boeing 737 and Airbus 320 which is comfortable and not noisy?

It's all the same for narrow-body airliners.

The body of the 737 is much thinner than the A320, and the noise is much louder than that of the A320. The A320 seems to have a more aggressive climb rate than the 737. It is more comfortable than the A320.

The Airbus A320 family of aircraft is a single-aisle, twin-engine, short-haul 150-seat passenger aircraft developed and produced by Airbus in Europe. It is the first commercial aircraft to use a digital fly-by-wire flight control system, and the first civil airliner to relax the static stability design.

The A320 family of aircraft is designed to improve cabin adaptability and comfort. The A320 family of aircraft, including the A318, A319, A320 and A321, makes up the single-aisle aircraft family. Designed to meet the needs of airlines to operate short- and medium-haul routes at low cost, it provides operators with the greatest commonality and economics in the 100 to 220-seat class.

Airbus 320 Security.

Airbus A320 series, so far 26 A320 series have been damaged due to accidents, with a total of 5,961 deliveries, with an accident rate of 790 casualties, and the average loss of life per accident is human. Literally, the Boeing 737 family has a higher accident rate than the Airbus A320 family.

Any industry is constantly improving, but at the same time, it has to pay a certain price, and for the aviation industry, it costs a lot of money, time and human lives.

I believe that on this basis, the Airbus A320 series must have absorbed a lot of various mistakes made by Boeing in the past, and Boeing has slowly grown in this process, so the safety record of the later 737 series is much better. The immaturity of the early technology is the most important reason, as well as the air accident investigation at the time of the accident, after all, the purpose of the air accident investigation is to try to ensure that the same mistake will not be made a second time.

The Airbus 320 series is a "rising star" in the narrow-body passenger aircraft market, with many "black technologies", and it is comparable to the 737 in terms of passenger capacity and range, or even more advantageous. As of May 5, 2019, there were 1,472 Airbus 320 series aircraft in operation in China, accounting for % of the total fleet of China's civil aviation.

When considering the safety of an aircraft, it is not possible to simply compare one type of aircraft to another. The safety of an aircraft is a complex issue that requires consideration of several factors, such as the aircraft's accident rate, type of accident, maintenance records, technical characteristics, and many more.

Over the past few decades, both the Airbus 320 and the Boeing 737 have their own accident records. However, to compare the safety of the two aircraft, there are also some key factors to consider, such as the number of aircraft, the time of service, the environment in which they are used, the quality of maintenance, and so on.

Overall, whether it's the Airbus 320 or the Boeing 737, they all have their own advantages and disadvantages, and they can't be simply compared. When choosing an aircraft, it should be evaluated and selected based on the specific situation and needs.