The FX unit: (Edited to Add)
I want to say about 6yrs ago Caldwell announced the Velociradar development. Then it was crickets, then the FX came out, then the Garmin, and then the Caldwell. Boy howdy did Caldwell miss the bus on this one.
I saw this FX chrono and it checked all the boxes I wanted in a chrono. It can be set up in about 20 seconds and hasn't missed a shot in 500ish rounds fired so far. The phone app is really handy as I can just get all the shooting done, and then study the results saved on my phone and plot the mad scientist experiments for the future.
It actually has more features than I want/need/use. I haven't relied on the BC calculations yet. I need to research more on "True BC" of FX and see if it's more or less applicable compared to more general BC input from Litz, or the manufacturers. Sometimes it shows a lower BC for a string that shot faster than a slower string showing higher BC. ??? Anyways, I just type in the MV for the Kestrel AB and stay dead nuts to 1 mile.
So I get this thing after 30yrs of sky screen units, not wanting to dabble in the LR complexities, happy as a clam, and then the Garmin releases...
. I am not gonna run out and get the Garmin, as I think the only advantage over the FX is being gun mountable. Although, that would have been great last ELR session with 30mph winds blowing my FX unit over constantly! (Already enough adversity, then add that on top of things!) I think the Garmin would also shine in the winter when it's too cold to shoot off the bench and I option to shoot out of my truck. 99%of the time I bring 2-3 guns to the range to maximize the session and they get paced in same spot besides the FX.