I have herd many mixed reviews locally about the express models. I have owned a 20ga wingmaster youth since I was 12. Never an issue and I beat the hell out of it. My son used it until last week when I bought him a Fusion Gold. He wanted SA not pump.
If you want a pump you cant go wrong with a wingmaster. I would also consider BPS.
Concentrated power is not rendered harmless by the good intentions of those who create it.