Since it is an elective course, it is definitely not better than a professional course in terms of study time and intensity. So, I think it's better just as an interest. How useful it is depends on whether you study well or not. Russian, it's a little difficult to hear. As an elective course, you may not learn anything. If you want to choose, choose the simple one. In addition, because of frequent contact, it can be practiced. Actually, seriously, it doesn't matter what you choose. The important thing is that you must study hard and learn it well after you choose it. No matter what you learn, it will only be useful if you learn it well. Moreover, if you learn well, you can use it everywhere.