I have an F1 Crony with the cardboard screens, still like new, only used it a couple of times in the back yard with a pellet gun.
I got the Garmin for Christmas; I use it about every time I shoot.
I don't use the app a lot, but just like to see how fast the bullets are moving.
Once I get past all my eye surgery stuff (cataracts) I will hopefully use it for load development.
I really like the Garmin, takes up almost no room in a range bag.
I made a crude case out of some nagahide or whatever that fake leather stuff is called that I had laying around.
It deserves a nice, tooled leather case and perhaps someday I will get around to it.