Bought during lockdown when there was no possibility of seeing the appliance before purchase.
1) The top oven is tiny! Because of the design of the racks, it is very difficult to get more than one shelf in at a time. What if you want to cook 2 pizzas in there while you are using the bottom oven? And if you want to use it to keep some of your cooked dishes warm while, say, you crisp up your roast potatoes in the bottom oven, there's very little space. With a rack on the lowest level, you have only 10cm space above it, but you still have 4.5cm wasted space below it! It would have been easy to add a couple more shelf heights to the rails. Also, with all previous ovens I've used, the wire rack sits flush with the grill tray underneath - they sit on the same rail. With this oven, the rack sits proud of the tray, so the tray uses one rail and the rack the next one up. Ridiculous.
2) The main oven doesn't cook that evenly, as is claimed. Flapjacks, bread and duchesse potatoes have all come out browned on one side.
3) The timer beeper is soooooooo quiet! If you are in the kitchen with the radio on, it is super easy to miss the finish. Again, it is quieter than on any oven I've ever used. You could set the oven so it turns itself off after the required time, in case you miss the beeper, but this idea doesn't work. Do you want to leave your sponge in the oven for an extra ten minutes after the oven has turned itself off? Of course not, it will dry out.
4) All my ovens so far have had the great little timer where you turn the knob and in a flash you can set anything from 1 to 60-odd minutes. Superb! I was not looking forward to giving that up with the new oven as my parent's (different brand) has touch-sensitive buttons like this Bosch and it is a disaster. Fortunately on this oven the buttons are perfectly sensitive enough. But the system is less user friendly. When you've cooked your pasta for 10 minutes and it needs another minute, you select the timer and is automatically selects 5 or 10 minutes to start with (depending on whether you've used the + or - button). You have to press the button a total of 10 times to select 1 minute. Yes, you can set the timer to half-minute intervals, whoopee-doo, but it's too complicated.
One the positive side, the oven does seem good quality, as you would expect. There aren't lots of complicated programmes, which for me is great. The selectors are fairly easy to grasp and the markings allow you to set the temperature quite accurately - I would say you could set degree by degree if you wanted to. You do have to look for the little marker on the side of the knob to get it accurate, as any parallax makes setting from the front difficult. Once again, a little tweak in design would have allowed the mark on the knob to be right next to the temperature markings on the oven, without having to look at it sideways.
Overall, if you want two properly useful ovens, don't buy this. But if you just need a quality oven at a good price and can put up with some annoying niggles, get these while you can.