Not necessary!
The main criteria/thing is to look at the material, and/or the price!
If the brand is one of the most popular, and has good material and is a good price for your budget you may get it.
But if you feel like the material is not right for you, you may continue looking!
But make sure you always try it on, because you will be running, doing activities in it!
Most of the times people look at the brand because they want to look stylish/popular wearing an expensive brand such as Nike, Adidas, Lulu, etc.
Hope I gave you an idea!
Please thank me and rate me a 5 star!
~Aurora