As previously mentioned, I really only have one racing drone, the HappyModel Mobula 6 but I do plan on getting more so I said "drones".
The HappyModel Mobula 6 is in the "tiny whoop" class of racing drones. It is 65 millimeters from one motor shaft to the motor shaft opposite to it. this means that the outside hoops measure 80 millimeters by 80 milimeters. Although it is very small and light (only 20 grams without the battery!) it should not be classified as a toy because it is very fast especially on a small indoor course. It is also packed with features, like a fully functional FPV (first person view) system with smartaudio and a good flight controller. It has a crazy high thrust to weight ratio to make for some very fun flying. overall I really like the HappyModel Mobula 6 because of all of it's features but also because it gives me something to fly inside for when I cannot fly my planes outside.