Which of the spfile and controlfile to use for restore?

I have run the following script

run {

backup database archivelog all;

backup spfile current controlfile;

}

This produces 5 files:

1 Archivelog backup

2 Full backup included controlfile and spfile

3 Archivelog backup

4 Controlfile backup

5 spfile backup.

Which of the spfile- and controlfile backup should I use for restore?

Restoring to another host.