I would keep well away from all Bosch/Siemens/Neff dishwashers. Whatever the tank to base warping issue is or not is it still does not change the fact of the poor quality heatpumps. I have had so much trouble with Bosch and Co dishwashers that I refuse to work on them anymore… Yep they are that bad! Badly thought out too from the repair angle; could only be designed by a German with a twisted sense-of-humour. Total rubbish machines is my opinion. Dishwashers to avoid: Whirlpool, Indesit, Hotpoint, Zanussi, AEG, Electrolux, Kenwood. You would be better off with a cheap Vestel made machine though the spare prices are a rip off so that leaves Beko which I rate as better than the whole sorry lot of the ones that are listed here or better still don`t bother with a dishwasher at all which is the route I went down: no point buying trouble for troubles sake is there?.