This list is to give you an overview of each material and the best product you can pick under $20 in its category.With your money, kuongshun pla is the best you can buy at the cheapest price.It won't let you down.
Polylactic Acid (PLA) Filament
PLA is the most commonly used filament for beginners and general purposes. Polylactic acid is made of organic polymer and is a biodegradable rigid material with a low melting point. It is often used as the basis for the models and indoor objects you want to draw.
The disadvantage of PLA is that it becomes soft at relatively low heat about 60 degrees Celsius, 140 degrees Fahrenheit for American manufacturers, and performs poorly outdoors.
ABS is used in many products around the world and is praised for its high temperature and environmental resistance. Once printed, it is also very tough, and if you want to spend time, you can wet it into a super fine surface. The biggest drawback of ABS is its toxic fumes. If you are considering printing with ABS, make sure you are in a well ventilated location and use the enclosure whenever possible.
PeTG is a happy combination between PLA and ABS. It has the strength and temperature resistance of ABS, and it can be safely printed indoors. It can be a bit difficult to do this, but once it is done, you will never look back. You may need to use Micro Swiss Hotend because PeTG requires very high temperatures to print.