Many schools of thought on engine break-ins, no 100% correct answer.
For maintaining your warranty (if it matters to you), I would suggest following the break-in guide in your manual:
Personally, I babied it for 1600km before ripping on it at all. I also did an oil change after break-in... again not required or noted in the manual but I've always done that (so has my dad) and our family has never experienced an engine failure and tend to keep our cars 10+ years minimum.
At the end of the day just do what makes you the most comfortable.