on Safari or Chrome the behaviour is as in the following image:

after typing "ori" or the start of a URL the top result is already selected and I can just press enter and go to the website.
However, currently in Orion the behaviour is different where the suggestions are displayed but pressing enter immediately just runs a search instead of taking me to the top result.

I understand that this is a preference since Chrome/Safari behaves like in the first picture whereas Firefox actually behaves like what Orion does currently. I believe an option would be nice if the feature gets implemented.