Thanks to all.I think I found the reason of our different views:In the DIVX niche there are 2 main keywords.The first in importance as said by HQ and substained by EXSEDO is"divx codec" with 100K searches and the seccond is "CODEC'S "DIVX" with 22K as claimed by myself.Pay attention to the ' between the codec and the s.Both are strong keywords and both are gramatically correct.
In other words the lack of the sign" ' " which cannot be included in a domain name is the reason of the confusion,so both keywords are correct and valid,and even if divx codec is better still my domain
codec's divx is an excelet domain,correct gramatically and with a big bunch of exact searches.
We were all confused.Best regards.
Optimal