As far as types oil and break-in procedures are concerned there are as many opinions as fish in the sea. Not wanting to start a flame war let me just say what I have done to my V after owning it a month and just doing the 600 service last weekend. I followed the factory recomendation for break-in for the most part. Its really hard to absolutly stay under 4k and be safe in traffic. The reason I follow the factory's instructions is that I don't think they just pull these things out of the air. I think they have a lot of experience making and testing engines and spend millions on R&D to find how best to break them in. That is my opinion after reading much over the years about the subject.
As far as oil I went and bought the Kawasaki filter and a gallon of Kawa 10-40 oil. The filter was about $11.75 and the gallon of oil was $16.00.
Even though the factory filter is more expensive than going to Wal-Mart and finding a Fram that will work for much cheaper again I think what the factory reccomends is cheap insurance.
As for synthetic oil, I won't put it in my motor until at least 12000 miles. I think synth is just too slippery to let the rings seal properly if used too soon.
Again, this is my own opinion only
I'll use different brand oils I'm sure over the time I own the bike. I don't think the brand is as important as using the right spec oil and changing it regularly.
Also after reading about some folks finding metal in the first change of oil I used a white, clean drain pan and drained the original oil into it and let it sit overnight. In the morning I slowly poured off about 3/4 of the oil and then looked for all the "metal". Hmmmm, no "shavings" or other large pieces of metal to be seen. I then took a magnet and swept through the oil and the bottom of the drain pan. The magnet did collect some very, very, very small
metal bits but they were almost too small to see.
Lastly I'm amazed at how little service these bikes need. I've had a number of BMW's over the years and the last one was a 2002 GS Adventure and for the 12,000 mile service you had to buy 4 quarts of oil (BMW synth was about 9 bucks a quart, maybe more now), a 15 dollar oil filter and 2 quarts of synth gear lube for the trans and final drive at about 13 bucks a quart. Over $70.00 total!! Yikes! I loved my Beemers but they really are maintenance Queens.
Oh, one more thing. Checked the mileage exactly on my last fill-up and it was 52.3 MPG. I think this will get worse as I explore the upper limits of the rev range in the future!
OK I'm done now, flame away!