Guess you are also a calligraphy lover.
It's very important to write calligraphy brushes.
Before buying brushes, you'd better find this article and read "Top Ten Brushes in China (with Selection and Maintenance Methods of Brushes)"
This article tells many good brands of brushes and some methods of how to open and maintain newly bought brushes.
It is also accompanied by pictures of the correct holding methods of brushes.
I think it is an article worth reading.