Best chronograph for PCP

I've got a Caldwell Pro, a magneto speed, HAD the pocket FX, a Chinese unit off Amazon that didn't work, and a Lab Radar unit.
Don't like anything hanging off the end of my barrel affecting poi so the magneto speed sets in its case.
The pocket FX was inconsistent/ unreliable for me so I sold it.
My Lar Radar unit has issues recording each air rifle shot as well as fps. velocity spreads that AREN'T reflected by POI on the target. Updated, called Lab Radar ECT. .Works most of the time with my air rifles, but great on powder burners.I think its a issue using the external trigger shooting air rifles. Gets triggered by others shooting powder burners around you or blowing wind.
The Calwell pro works every time, so that's what I generally use at this time. It give me high fps. Low fps. Average fps. and standard deviation, that's all I need, so don't need all the other stuff.
The new Garmin has peeked my interest. It will do everything I need like the Caldwell, without sun shades or ir lights indoors.
 
.....IS IT ACCURATE AND RELIABLE?

The UK guys were saying that SKAN are no longer manufacturing (https://airgunforums.co.uk/threads/where-to-buy-skan-chronograph-🤔.107219/), so as far as *I know* there is only 1 Chronograph that has any certification/calibration & could claim accuracy.

Aim small did a very interesting review of 2 FX's:
Out by 10fps consistently... same manufacturer... same testing/calibration?!?

There's a lot of threads on the UK forum about those chinese ones - they *can* be accurate, occasionally one will come through way out of spec, so its a bit of a roll of the dice