In addition not to being restricted by regulations, Tello flies like a stealth aircraft, with its almost imperceptible noise and minimal size.
It doesn’t intrude in anybody’s perception, which expands a lot the choices of places to fly.
I agree 100%. I have a Spark which I love but there are times where my inconspicuous little Tello is perfect for a quick aerial snapshot. So I think Spark and Tello compliment each other nicely—there are times where you’ll need Spark but also plenty of times where you’ll prefer Tello. So I’m very happy to have both!