This appears to be the 2016 model, while 13597035 is the 2018 model: https://www.philips.ch/c-m-mo...
We have this model (2016) and are actually very happy with it. We made porridge with it every day for about 1 year. Over time, depending on the vegetables, discolouration forms on the plastic parts, I could imagine that this is less visible on the newer model due to the darker colour of the plastic parts. It is important to decalcify in between.