I own the Normcore and this Mhw-3Bomber gaggia version of portafilter.
Normcore has given me quite alot of leaking issue due to it being thinner and general slightly less material. Mhw-3Bomber has not, its weights more and has a thicker side wall. No leak equal happy espresso enjoyment.
With that being said, when Mhw-3Bomber is 10/10 the Normcore would be a 8/10. Not bad just bomber is better.