Yes, quite different. I guess I should have clarified what was similar, the RF Input 3.4-4.2GHz, IF Output 950-1750MHz, L.O. Frequency 5150, Gain 65db, is the same, but Noise Figure is 17°K instead of 15°K like the Titanium C1W-PLL lite. And the YY-CD008 does not have Phase Lock Loop.
Not sure about anything else, but the overall quality of the housing of the Titanium C1W-PLL lite is also noticeably better.
It was my 1st C-band LNBF I bought, mainly because it was a cheap way to experiment and if something went wrong, I wasn't out too much money. But it actually performed better than I expected. Now that it's back working, I have it on my Mini/Micro Bud setup, and going to use the C1W-PLL lite on a 2nd dish, and save the new C1-PLL with the WiMax filter I just bought for a future project. I'm was able to get about the same signal quality from all 3 of the LNBFs, so that gives me some great toys to play with