every time. Jets are aggressive and violant, Gliders are possible only with the wind and weather. This being said, a Horten designe would allow both, especially if the wings are attached to a core monocoque with engines in a supercharger designe over jets to keep the noise down and short wings and can ideally land autonomously.
So, how do you do Gliding?
Well you defeat gravity like this guy does. There are four ways to do that. You have an engine rucksack, Thermique, Mountain Upwinds or like a Vert Skater.
Thermique are warm upwinds over reflecting surfaces the sun hits over which a glider is circled to srew with the upwind higher. The Desert is full of them.
Mountains are like jump ramps for winds and at their tops those create a preassure flow that can be used to accelerate the glider giving more speed that will have the wings do their job creating upforce.
And the Vert thing is like a skater in a vert half pipe, only for the brave and needs a steep drop to accelerate into a 45 degree up flow ending in a higher altitude as the drop in starting point.