I went from a screen type chronograph to the Magnetospeed, to the Labradar.
Reasons:
1) Screen type to involved to set up (can only do so when range is "cold")
2) Magnetospeed is very good, but it did effect my groups, this required more shots without it in place.
3) Labradar can be set up while range is hot, easy to align and I mount it on a travel tripod with a ball head.
I do not shoot smaller than 22 cal, and I am under 4000 fps, so the Labradar meets all my needs.
Here is how I use it.
1) Tripod mount. I use a travel tripod, about $60-$70 on Amazon, folds up to about 12'' in length.
2) Use the 6" setting for muzzle distance, and I set it even with the end of the barrel, and 1 to 2 '' from the barrel.
Never a problem with other guns setting it off.
3) Use the Labradar App on my iPhone to control the Labradar, so you don't have to get up to touch the buttons.
It is easier than the buttons on the Labradar, is more intuitive, and quicker.
4) Use a backup battery, about $20 on Amazon.
5) Use a sighting method to align Labradar. See mine below.
I used two brass tubes which I got from my local Hobby shop. 
http://www.ksmetals.com/ or Amazon. One 1/4 " OD, and a second one 7/32 OD. I glued a short piece of the 1/4 tube to the top of the Labradar, and I slide the 7/32 tube into it. I look through the tube and adjust the ball head on the tripod to center the target in the tube. I store the tube in the Labradar case.
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The rubber ring on the end of the tube is to keep me from poking myself in the eye. I also sprayed flat black paint inside the tube to cut down reflections.
The charger, spare battery, cables, and sighting tube all fit nicely in the Labradar case.
I like the Labradar app on the iPhone. Allows you to quickly start a new series, and provides all the pertinent data.
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