Hi Sonnie, Hi Leonard!
We have actually given LTI a test...as well as APO (another vender). There is also another thirdparty vender that comes to mind but I cannot remember the name right now. All failed our QC.
I can only recommend Philips for Samung, RCA, LG/Zenith, Philips....pretty much I'm a Philips fan
But again, a good rule of thumb, use whatever can in your TV originally. Just open a few screws to physically check the lamp or look it up online. There are a lot of resellers out there that try to fool consumers into thinking OSRAM is the original manufacture of their TV models. I can tell you that 95% or both Samsung and RCA TVs used the Philips as the original lamp. If you buy a replacement from Samsung directly, there are only two lamp codes that ship with Osram. To my knowledge, I don't know any RCA, Philips, LG/Zenith rear projection TVs that shipped with the OSRAM as an original...we have to get rid of this myth!