I am no expert but have had 1 Bosch and 1 Siemens dishwasher over the last 10+ yrs. Both are the same design in reality (doesnt matter which make you buy). Have been impressed with both of them in terms of wash performance and build quality (I have just been taking the Siemens apart to clear a sludge blockage from food debris but to be fair its 6yrs+ old and used daily – we have 3 kids). This Siemens m/c looks well made internally…….
Hence I would recommend you look for a Bosch / Siemens model around that price range………
Having seen the quality of Zanussi, Hoover/Candy, Hotpoint/Indesit/Ariston, Bosch/Siemens up close, and actually used them:
I would go for Bosch (or its sister company, Siemens). They are far better built, more robust, quieter, spares are easy to come by, technical information is available.
Remember to send of the guarantee card, to claim the 2-Year Warranty (if you don’t do this, standard 1-Year applies!).