I am a big fan of 4S FPV quadcopters - particularly the GEPRC Rocket. I have both versions - the Rocket Plus with a full DJI Air unit and the Rocket Lite with the Caddx Vista. They are durable and a blast to fly. When I recently broke two of the prop guards in an epic crash, I decided that I would not replace them, but instead, remove them to see if flying without them would improve the Rocket's performance. And, spoiler alert, it definitely did. I did fly a bit more cautiously without the guards, but I flew faster and more gracefully...at least it seemed that way to me. Check it out and let me know what you think!