Ok...
Now that the question has changed....
I have a Megger MFT1502... I bought it in 2004 and at the time it was a toss up between that and a similar Fluke. I went for the Megger in the end because it can directly measure three phase Ze, PEFC and PSSC, IIRC the Fluke at that time couldn't.
At just under 3 years old my Megger developed a fault which was repaired under warranty without any problem, they returned it with a hard case, a new set of leads and batteries. . They also returned it with a set of test results which is effectively a Cal
Since then I have used a Fluke, but in the short time that I used it I found it awkward having to navigate through the tests. .... im sure that I would find it easier over time