Spie in my opinion the lower model Dyson did the best and quickest job out of all of them and this was from the washroom tests we did when I was on the design team. It was simply a far superior machine technologically and did the Miele's top wash (which took 3 hours) in 40 minutes. The massive door on it makes it by far the easiest to use and the giant tub means you can really load it up. Basically you can do 2 or 3 loads instead of 5 and you can fit a double duvet in it too. The only thing is because I haven't seen inside the machine for some time I don't know if they addressed some of the longevity problems it had so unless you can talk to someone in the know I might be inclined to avoid it. Also bear in mind the machine is about 4" deeper than most other washers so the fascia will stick out if it's under a worktop.
If you have money to burn and want a conventional washer then the Miele washer is your best bet. It WILL last 25 years and still be going strong and the enamel on the case won't chip off. It is quiet and strong and doesn't vibrate and they have years and years of testimonials to back this up.
If you can't face paying £1K for a washer then the Bosch Maxx at £500 offers probably the best washer per £1. It'll never go wrong on you and it's got a big door which really helps use.
Above that if you have the space there are the freestanding Maytag top-loading machines which are the real top end of the market. If you do a lot of washing they can be more efficient but for smaller loads they are a bit expensive to run.
There was also a Swiss machine that we used to pore over which was *completely* silent but I've forgotten the brand. That was about £4K though
