Consider the look you want for your bike( white, black, colored).
And the price you want to pay for it( compare multiple web shops to have an idea
bike24.com,
r2-bike.com,
bike-components.de or
bike-discount.de ).
If you take a Rockshox, a Fox, a DT Swiss you'll be fine and will get what you pay for.
More exotic options exist too:
I run a Lauf, that I had for the price of a good rigid fork, and there is no maintenance at all and I love it.
I tried a Lefty before, which is a pleasure to ride, but very expensive and I got my share of maintenance issues with it.