I have been burned with cheap asian replacement bulbs placed in refurb housings. I know others have been burned even worse by cheap bulbs plac3ed in knockoff housings that melted in use.
I am willing to pay more for genuine replacement bulbs as they seem to last about three times as long. You need to shop carefully though. I am noticing on Amazon that vendors are advertising 'genuine replacement' when it is not an OEM bulb. The safest, but most expensive course is to buy from the manufacturer. Planetbulb is reliable, but often more expensive than the manufacturer.
If your projector has a filter, replace that as well. Cooling is a big factor in bulb life and choking the airflow is a bad idea. A new filter is cheap insurance.