I'm not sure about his main, but you probably shouldn't choose your main based on what someone else likes. His main fits his turning style; likewise, your main should fit yours. Both of the cubes you mentioned are fine choices for a main, as are about 10 or 15 others. What I recommend doing is looking up reviews of some cubes on YouTube, and deciding which one looks the best for you. Some particularly popular cubes you might want to look into are: QiYi Thunderclap, GuoGuan YueXiao, Cong's Design MeiYing, and the two you mentioned above (although I'm not quite sure about the premium TangLong; I'm not a big fan of the original TangLong, myself).