The Type 45s, like the ZUmwalt, the FOrd, and the US LCS were all brand new design.
They had birthing pains as the Astute are.
ut they are actually VERY caable ships and when all of the biorthing pains are going, they will be among the best AAW multi-purpose DDGs available, as the Astute will be among the best SSNs available in the world.
Now, the Burke IIIs I expect are going to have a fairly clean roll out as they are basically upgrading power and radar with everything else being pretty much the same.
The Virginia class has had a stellare roll out and the US is building them in large numbers. 17 hae already been launched and they are coming in ahead of schedule and below budget.