I did the GMAT today, just to see what the CAT was like. I got the same score (780, Q51, V48), but I left a verbal question unanswered to see what penalty there would be.
It's amazing how similar it is the GMATPrep. Be sure to do these exams as many times as you can. Verbal was similar to the OG11 (last part), with no unreasonable SCs. RC was tough and the CR seemed straight out of the newspaper business section- a good reason to read an English language newspaper every day!
The Quant was almost identical to what you would get in GMATPrep, although I am convinced that the second question was either experimental or badly worded. I spent 10 minutes trying to make heads or tales of it, before I remember that advice I give my students- no one question will have much impact on your score!
No permutations/combinations/probability!
Lots of inequalities/remainders.
The essays were interesting- my only frustration is that I'm a poor typist, so I had to plan as I was writing- not recommended. I did very well on the argument essay, but I did not give many examples in the issue essay, so
I'd be surprised if I get more than a 5 in AWA. Practise typing if you are like me!
I finished quantitiative with about ten minutes to spare, and verbal with about 5 minutes to spare. Then there was this survey about where I wanted to do my MBA, and I envied all of the people in GMAT forum who will be heading to business school- I dropped out of university and have never thought of finishing my degree.
I won't be going anywhere, as this wonderful forum helps me to be a better GMAT instructor!