I had accidentally found this link ..
http://www.freepatentsonline.com/article/EE-Evaluation-Engineering/175075101.htmlWell it is the most well written explanation of what you must have in mind ,
when you think about getting a new DMM.
The selection of a new DMM , its an very complex process, for beginners and professionals.
I found lots of help by reading the above.
That's why I am suggesting to read it too.
Theoretically , some one should make a list of the " candidates " who offers the most needed functions to him.
And them , he explores the others factors , like pricing & reviews.
In all my life I was avoiding to become Brand loyal ,
this helped me allot in time , and now I own few, but really worthy tools.
Enjoy the link above. :-)