Actually, Choi (최) and Chae (채) are two different surnames, although they do sound similar (and would probably sound almost the same to English speakers). On t

Actually, Choi (최) and Chae (채) are two different surnames, although they do sound similar (and would probably sound almost the same to English speakers). On the other hand, transliteration of Korean personal names is always in a state of total chaos, so using Chae instead of Choi (or vice versa) is not technically wrong... although definitely unconventional.