repair records
Regarding CR, their repair records are based on customer surveys, which means 'the customer called to complain it didn't work.'
When you do use a new technology, sometimes you find that it doesn't work the way you expect it. With dishwashers without drying cycles, folks often complain, and call for repair, when things like their plastic does not dry. You see this on Gardenweb all the time.
Certainly they may need more repair, I don't know. But I can tell you my Bosch is hands down better than the Whirlpool that replaced it, that nearly burned my house down twice with short outs in the circuit board. (And no, I don't abuse the machine). So some of it may be individual machine build quality.
I also suspect that Miele may be tagged because their prices are so unbelievably high by comparison to every other brand that folks expect a lot from the machines. I don't know, and since I don't have a Miele dishwasher, can't even hazard to guess.
It would be interesting to know why these machines need repair. I read one review online for the Bosch dishwasher that I bought and it was criticized because the cycle time was not accurate; it started out at 140 minutes then jumped down to 100 minutes. Well, the cycle time you start with is the longest it could be (presumably if the machine has to heat the water and you have really soiled dishes) then it senses the condition of the load and adjusts the wash time.
In other words, I have no idea, but my experience with CR repair histories hasn't been awesome. However, I certainly do listen to techs!!