Motor: LS Vtec (Gsr Head/B18A1 Block)

After reading a ton of different threads on different forums, I'm still trying to debate on the best method to break in a newly built motor. I've read lots of people just let it idle to warm up with the fans coming on, check for leaks and any smoking etc.repeat twice and then change the oil. Now after this step, some tow it to the DYNO tune then they are good to go. Other prefer to street tune, break in then take to the DYNO tune? What do you guys prefer around here? What has worked and hasnt worked out for you, any tips?!