I use http://www.sqlserverbooster.com

This software generates complete script backup, full, differential and log; as you wish. Supports since 2000 MS SQL Server versions to the present. Also let you generates your script in batch files, because if it's too big at the moment to generate the database again it is little tricky to restore with a huge script.

Besides let you upload the backups to the cloud, schedule the backups an more.

The good thing is that it's FREE.