I have one of these. Mostly I love it, although moving from the soft water of Wales to the hard chalky stuff of Wiltshire has been challenging. It will only deliver sparkling dishes with the most expensive dishwasher tablets, and salt and rinse aid (I haven't used the last two in years).
Yesterday it threw out all out the electrics, including the heating boiler - although it took an electrician to discover the source of the problem - which meant little work was done. (I really must rediscover how to write the old-fashioned way - with a pen and paper!)
Today, I have to find the guarantee (it's in one of those piles over there) and call someone to fix it.