Question about What is the best option?, Code Proposal

Reading the code I got this and thought asking about what is the best option or if it's the same for the following code in order to learn a little more. For big gurus of Kotlin, what about using companion object or constructor in data clases or clases, for example, following code:
```kotlin
data class Movie(val id: Int, val poster: String) {

companion object {
fun empty() = Movie(0, String.empty())
}
}
```
Vs. This Is what I used to use
```kotlin
data class Movie(val id: Int, val poster: String) {
constructor():this(0, String.empty())
}
```