They've been great to work with over several years worth of bulbs. I've had some burn out prematurely, and the folks there have been prompt and friendly about sending me no-cost replacements. I will continue to work with them because they get me bulbs for my UV device where manufacturer charges $120 per bulb, and LSE is about $32.50 per bulb. I think I've only been to their website one time; many orders just through friendly emails. Sorry other folks didn't have great experience.