There are so many extension available which is very useful for purchase domain. Different country have different domain but .com is one of the best extension. It is really good for all people. It is really good and useful extension.
I will definitely go with .Com as there is no rocket science to know why I said that as it’s really the most popular one at the moment and also since I am using GoDaddy so there the price are extremely low and something I can easily afford. I am using “30Word” voucher code which gives me massive 30% discount for all products.