Jebo Lighting

[Ranger9206]

I currently have a 442w Jebo metal halide fixture, have had it for over a year without any problems whatsoever, and was looking to upgrade the bulbs in the fixture. Before I invest on a new 250w halide bulb, does anyone have experience with these fixtures, and are they brand specific (eg. does any other brand of bulb work in the jebo fixture besides Jebo bulbs?) If so, any recommendations on a brand to choose?
Thanks for your time.