Interesting timing for this post. I just spent the last three days working up new recipes and then heading to the range each day to Chrono (New Year weekend)
I picked up the Competition Electronics Pro with the Bluetooth DigitalLink. I think the DigitalLink really makes a difference. I like being able to use my iPhone to monitor my shot strings, temp, baro and a long list of data and then send the data to my computer and load into a spreadsheet.
I did find the Chrono a bit picky about light. First day was bright sunshine and worked fine at first until angle of sun changed then gave some odd readings. 2nd and 3rd day overcast and so long as not under the range canopy worked fine.
I use a full size tripod set up about 7' to 10' out where it can get a view of the sky. Bench rest pistol, check accuracy on target, take notes. Back to shop, load up some more. Load up about (20) rounds of each bullet weight and powder weight, back to range, repeat.

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M&P9, 40, 357, 22, 40 Pro +++