Are Delphi fuel pumps quality?

I would go with Denso First Time Fit, if available for your model. I have purchased their radiators, fuel pumps, sensors, and various other parts, and never once been disappointed. Other than that, I would try to get OEM, or at least another quality brand (AC Delco, Bosch, Carter, etc.) I would have considered Delphi to be a decent brand, but apparently others here feel otherwise.