Street Triple, With Or Without Fly Screen?

It's your bike to do as you please. Just enjoy the ride.

 

As @sprintdave said, it's your bike. I have a Powerbronze flyscreen on mine as it looks more "finished" to me and directs the wind blast from the base of my neck (I am not tall!), so that's right for me. If something different's right for you then that's all that matters.

 

I've got a Puig on mine. I'd have preferred it in body colour, but they only do black (at the moment). It does make quite a difference in terms of wind blast but only when you crouch down.

 

I went with the OEM screen, most screens from reputable companies look good, personal preference I would say. I only got mine just to finish the look.

 

My Speed Triple had a factory screen which was okay, but after a long cold trip I wanted a tiny bit more protection and bought a basic Puig screen that's just a little taller. Still small enough so I don't get the buffeting that's so common with medium size screens, but just tall enough to get most of the wind off of my chest.

Screens are always a crap shoot in terms of effectiveness without producing buffeting and turbulence. I'd rather go naked with smooth air than a bad screen that knocks me all over the place.