There's no one - size - fits - all answer. The 'little busters dub' has its own charm. It can make the story more engaging for those who have difficulty reading subtitles or just prefer to listen in a different language. The voice actors in the dub can add their own unique interpretations. On the other hand, the'sub visual novel' offers an authentic experience. The original voices and the ability to read the exact translated text can be appealing. For example, if you're a fan of Japanese voice acting or are studying the language, the sub visual novel would be great. Ultimately, it comes down to what you value more in your viewing/reading experience.
The dub is the version where the voices are in a different language (usually English), while the sub visual novel has subtitles in the original language. In the dub, voice actors try to convey the emotions and story through their own interpretations in a different language, which might bring a different feel compared to the sub. The sub visual novel allows you to experience the original voices and read the subtitles to understand the story.
There is a chance that there's a professional dub for Tamako Love Story. However, it could vary depending on where you are accessing the content. Some regions might have it more readily accessible than others. You could check well-known anime streaming services or look for physical media to see if they offer the dubbed version.
Dubbing was the process of adding sound to a film or media. In a narrow sense, dubbing referred to the dubbing of a character's voice or the replacement of the original dialogue with another language. Dubbing required the voice to be malleable and the size of the range, but there was no specific requirement for whether the tone was good or not. Dubbing required the ability to accurately express the character's language and express different emotions and characters in different context. At present, there were some intelligent dubbing websites and software that could provide online speech-to-text and dubbing services to facilitate the production of videos and advertisement dubbing.