I like these 50ps. The EU one is a beauty. I'm not a connoisseur like you but buying coins I like is what keeps me stacking. I've got the suffragette 50p - £399 it cost me, in 2013!
Super proofs, U.C. Frosting breaks will not affect NGC grading as they do not constitute post-manufacturing faults. I've got PF70's with a few frosting "faults" and made no difference.