haibike sduro trekking s 8

Hello Everyone. I have now setteled in on a bike and I think it is going to be the Haibike SDURO Trekking S and I see that there is the model 8.0 and then the model 9.0. Can anyone tell me how big of a difference there is in these two models, I can get the 8.0 model a lot cheaper as it is an...