Jang's voice is maybe the smoothest, more calming thing I've ever heard. It's like markiplier became really sleepy and began reviewing kid's toys. Very relaxing, and very professional. Quick and to the point.
Eljay seems more... into it. He has a bit more personality and the fact he adds in a lot of what the community thinks into his reviews makes him great in his own right. I feel like if Eljay got a clear glass turntable and a totally white room to work in, his reviews would be better just because of his more excited personality and Jang's lack of it at times.