The country to study abroad this year is Britain. I don't know what suitcase you are taking.

First of all, it depends on which airline you booked. Different airlines have different requirements for luggage. For example, you can take 40kg or 46kg of luggage, and generally you can choose two 28-inch or 29-inch bags; If your luggage is 30kg, you can ask for a 30-inch bag, and so on. As you said, if you can't use such a big suitcase several times, you'd better wait for the ticket to be confirmed and refer to the airline's regulations before buying it.

As for brands, a random search on the Internet has many people recommending various brands, and almost everyone says differently. Some people say this brand is good, others say it is not good. I have seen a circle before and asked a circle of people, but I feel confused anyway. So since you said you were going to a physical store, go to a big store and choose for yourself. There is no absolute best, only relatively suitable. You can choose a good price yourself.