How to choose good facing bricks?

How to choose good facing bricks? On what should I pay attention?

Good evening. I think you should research information in internet, read reviews from people and experts, see examples, check popular types of such brick with detailed info, etc. For example this site https://www.mgnbm.co.uk/building-products/bricks-blocks/ provides detailed specifications and photos of bricks, so in my opinion it will help you.