xtrabackup or innobackupex

Sorry about the newbie question but I am wondering which command to use. I have been reading and it seems innobackupex is a perl wrapper for xtrabackup.
Also it says in manual that innobackupex will be deprecated. So should I just be using xtrabackup command?

Thank you

You can still use innobackupex even on 2.3.3 (latest).