There are many good one out there. http://www.summitracing.com/parts/luc-10631-1
I use this quite often, but virtually any of the break in oils will do.
Comp Cams, Brad Penn, Joe Gibbs, all offer great products. You will need to continue to run a flat tappet friendly oil even after break in. I like Valvoline VR1 20W/50. Again many good oils out there today. I know that O'Riely and AutoZone carry VR1 on the shelf here.