Big difference One to Cooper R56?

We will probably decide in October for a used MINI R56, but is not yet sure if it will be a One with 95hp or a Cooper with 120hp. The main area of use is urban area (journey to work, shopping); sometimes there is long distance to 300km one-way, and a holiday trip to Italy should also go out. Or on. Well, the One has 25hp less, but is the difference so serious? According to various reports on the Internet, you don’t feel so much like this. Well, that’s why I’m asking you here.