Just search, it's pretty common knowledge. Morimoto is TRS' house brand, they get them made the same as everyone else, in China. The difference is that TRS does quality control and will test and check the products. Anything that doesn't meet their standard won't go out. Look at how many garage sales they have or their "value" projectors which are ones that haven't been tested and tweaked. The eBay vendors just buy them in big batches and ship anything, it's hit or miss. Look at how many other vendors offer the exact same products - everyone just finds a Chinese supplier and rebrands them, bulbs, ballasts, you name it. Made in China doesn't mean low quality; TRS is getting their stuff from the same places the others are, they just do much better quality control and testing. That's what makes them better.
I'm not knocking Morimoto, just explaining why some people have great experiences and some don't. The number of people who have good experiences with Morimoto will be much higher than those who have good experiences with DDM or an eBay vendor. That's because TRS does quality control, they don't put that burden on the customer like DDM. DDM has a lifetime warranty, but it's pretty worthless if you have to pay to ship bulbs back to them multiple times.
