I’ve had oem replacements, and one cheaper kit, bulb only, that requires you reuse your old housing. They seem the same but I can’t say about longevity. Brightness, etc seems the same and no flickering or anything.
Next time I’ll definitely just get the bulb again, $80 vs $199…I agree see about their warranty policies. I remember the “aftermarket” bulbs had about the same policy as sony.