Putting a comma into a url verses a query string - SEO

I have a search results page of users that is filtered down by their location and the services they provide. A user can provide multiple services with a manyToMany relationship.

What do you think is a better url structure for these search parameters from an SEO point of view?

Comma separated services using something like this.

return redirect()->route('profiles.search.results', ['location' => $request->location, 'service' => implode($request->services, ',')]);

Giving this url..

profiles/hampshire/service1,service2

Or a more common query string resulting in the following:

/profiles/hampshire?service%5B0%5D=service1&service%5B1%5D=service2

I would normally go for a query string but having an array in a $_GET parameter looks much harder to read to me with the encoding. Unless there is a way to stop it encoding?

Any advice/opinions appreciated.