Changing default lock screen on Galaxy S3

[DeathByBFG]

So I recently upgraded to Jelly Bean on my GS3. However I still have the default Samsung lock screen. Which I guess is expected. But is there a way I can use the default lock screen or do I have to use Holo Locker. Additionally is there a lock screen that looks like Holo Locker but allows me to use icons?

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