You didn't even come remotely close to answering my question. In fact you didn't address either actual product at all.
Since you apparently don't know, both the DNA200 and Yihi SX450J are chipsets, not mods. I was asking which you felt was the better chipset, not what you thought about mods that have them. I was asking about the performance and functionality of the two different chipsets, how they compare to each other, and which actually works the best and why.
Someone considering building their own mods would need to know the technical differences, pros and cons of the chips they had to choose from.
Before you go starting a "I can answer anything" thread, you should spend a LOT more time doing research on the products you're talking about. I could have thrown in the Joytech, Laisimo, and Innokin's Aethon chipsets as well. Each essentially does the same thing but each does it in a different way and have their own positive and negative points. Each is used in a variety of mods. But I figured that sticking with the two used by custom mod builders would make it more simple for you.