Remote recommendations

So ive got a Magnavox 13MT143S, i was told a normal comcast universal remote will work fine, but i found a listing on ebay of the exact remote for this model, and says it works as it should. Should i go for the OG remote, or a universal one? Thanks in advance

Edit: I have a large black bar on the right side of my screen, and its getting annoying lol, thats the reason im getting a remote. If anyone also knows how to fix this, pls let me know 🙏🏻