I have now officially become a member on the "Mike New Bearing" club - I've just paid for it. It's staying.
As the bearing is running in, it's just getting better and better.
I am happy with my purchase, and once again David @ MCRU has provided excellent customer service.
It's nice to find a supplier that trusts you enough to provide you an expensive bearing, on a sale or return basis.

Now, it's time to spin some vinyl.