I never really understood how a different encoder with same specs of encoding make an output file with different quality so now I have to ask the question.

Whats better-
TMPGEnc(also about this, what version makes best xsvcd)
Panasonic MPEG Encoder
CCE

If there are anymore that are competitors, please tell me.

I have read the comparison on this site but a little eerie about it.

I really need to know this cuz i'm workin on the "to-be" #1 template or spec sheet for movies with little or no blocks. I have posted methods on here before about what i have found out so if you have missed any email me