Break in Question

[joker]

I have read a good bit on the internet about new engine break in procedure, and would like to everyones opinion on the matter. Basically from what I have gathered on the internet, there are two schools of though on the subject. The main purpose for both being that they allow the rings and valves to seat better, thus making for a more efficient, and powerfull engine.

1) Take it easy on the engine, limiting rpms for a certain number of miles, then raise the max rpms you drive at for another period of mileage.

not literall numbers but for example)
(rpms< 3500 for 500 miles, rpms<4500 for 500 to 1000 miles

2)A more controversial way of doing it is gradually stepping up the rpms and throttle follwed by a brief cool down period

ie 3 runs at 30% throttle, 15 minute cool down in between each
3 runs at 60% throttle cool down between each
3 runs at 60% to 100% throttle with a cool down in between

With method number two, the engine is broken in with very little actuall miles on it, while number one takes much longer. Which in your opinion is the better procedure