Breeding (New Zealand)

Its getting close now to making that final choice. I know many of these questions will have been answered previously, but any opinions would be gratefully read and digested.

Does anyone have info now on how the 'new sires' are going in the USA/Canada. I know there has been mention of Jereme's Jet here - are his results still stacking up? How about others such as Lis Mara, American Ideal,Shark Gesture Stonebridge Regal etc. What are your impressions of their offspring?

Also with so many sires with rising 2 yrs olds and yearlings - who has impressed - by stamping their offspring?