I've had a yellow one for years, and they are fine for use against kids and adults as well. Also have a longer version (not a sidearm) and they do come out differently.
There is a design flaw in the yellow ones, mine snapped off where it narrows down at the top of the handle, where a hole is drilled to mount the soft rubber grips. I got thousands of throws out of it, but that's where they will eventually break. The other two models look to have a deeper cross section at that point, and should last a bit longer.