It depends on what you want the Chronograph to do. All I expect of mine is to give me the speed to confirm it's up to the ballistics I need for that bullet. My decisions on a loads suitability are from performance on target. Any calculations needed do off the Crono with a calculator.
With that said use a Crony, small & inexpensive. Works well and if any problems they are excelent about repairing. Only problem mine ever had was nipping the wire that was sticking up a bit too high with a bullet one time. Crony turned it around fast and reasonable. Personally I consider all electronic devices throw away. Fine when they work but at some point all are going to fail.
Boats
With that said use a Crony, small & inexpensive. Works well and if any problems they are excelent about repairing. Only problem mine ever had was nipping the wire that was sticking up a bit too high with a bullet one time. Crony turned it around fast and reasonable. Personally I consider all electronic devices throw away. Fine when they work but at some point all are going to fail.
Boats