( I'm sure Microsoft will love to hear this!)  
I just finished the Enterprise Exam 2 hours ago passing with 823.  Just a word of warning, the questions have changed!!   I was probably better prepared for this test and more confident toward Enterprise than I had been any other test I have taken. I scored 980 consistently on the Transender exams and the same on the PEP test from Microsoft.  I came out of the exam  feeling disturbed,  mostly because the   exam was not what I had expected at all and because Microsoft had taken obvious test questions provided from Exam Cram and Transender and  distorted them, using the same questions but changing a phrase here and a word there to make you think it was familiar when actually it changed the whole logic of the question and answer.  
Out of the 51 questions there were at least 10 lengthy and involved scenarios! Two of the scenarios were muili-level exhibits!  (Two exhibits were used per question).   They boosted the time from 90 minutes to 110 minutes.  I finished with 6 minutes to spare and had NO TIME for review.
All this said, I have taken the ATEC training for Enterprise as well as studied for Enterprise a total of at least 70 hours. I read and re-read the Exam Cram and practiced Transender until I could quote the questions verbatim and knew the answers before my fiancé finished reading me the questions. And I have over a years experience with NT domains having installed 23 networks in the last 14 months.  I am co-responsible for a domain consisting of 14 PDC's and  67 BDC's with over 11000 users  total in our company.  Never the less I struggled! 
Just a word to the wise along with my suggestion.  Know Enterprise!  Know the material!   And do not go into the exam with any misconceptions or false assurances.  You have to know it or you will fail!!  
There was also lots of questions on IIS and TCP/IP.  If I hadn't already taken the ATEC TCP/IP course I would have failed the Enterprise Exam.   I have to admit that I was surprised that no one else on any brain dump anywhere even hinted at what I experienced.   I am left wondering if this was some kind of Beta Exam!!??    If this is true, both Transender and Exam Cram will have to be rewritten.  This is surprising because this was not true of any other exams that I had prepared for using these tools. 
I would appreciate any feedback on the above comments as I am still perplexed at my experience.
You can contact me at:  [email protected]