Hey robardin, here is a link to motoman and his break in method, which has yielded race bikes with significantly more power and longevity than bikes broken in according to factory directions.
There are two basic flaws with motomans method.
Breaking in a motor is not just about pistons. There are valves, valve guides, camchain gears, transmission gears, shifter forks, and a host of bearing surfaces that have to "wear in".
Secondly, if you really read the "factory directions" you will notice they say nothing about running the bike hard or putting a load on the engine...they simply say "not to run the bike over a specific rpm level" for certain amount of time.
Many believe that means not to , for example, run the bike over 5000 rpms at all until for the first 500 miles. That is not however what the factory is telling you. What they are saying is not to run the bike over 5000 rpms for "an extended amount of time" they quite specificly say to vary your engine speeds as much as you can, but nowhere ever have I read them to say DO NOT OPPERATE THE ENGINE OVER XXXXX RPMS AT ANYTIME. According to a tech that worked for Honda, this area is the most misunderstood bit of info found in the owners manual. Folks get a bit paranoid about it and end up being too gentle to their bike for those break in miles.
That being the problem, it is easy to understand why some think there is a huge difference in motomans method, but if you look at it, you will see that motomans advice is in fact not that different than what the factory actualy reccomends.
Motomans idea does not say redline the bike, it just says accellerate hard and decellerate hard. No where in my owners manual does it say I shouldn't do this... all it basicly says is just not to let the bike run for long periods
at the same rpm.
What also tends to happen is riders do not read motomans advice carefully either, and end up running their bike at high rpms thinking that is what they should do.
So when I said break in was a contraversial subject, it is only do to folks that misunderstand it. motoman included...as it is clear he doesn't really understand the "factory directions" either.