Ditto waterrat.
The Caldwell G2's auxillary lighting is nice.
Rechargeable by micro USB is nice.
I have bagged only 3 chronographs in 35 years, last one was with a shotgun wad that went low at 5 yards.
The Caldwell might have survived that since the aiming point is below the face of the G2.
If I bag the Caldwell and the Oehler I will get a Labradar, or another Caldwell G2.
Until then, the handy Caldwell G2 is used more often than the cumbersome Oehler 35P.
Both seem to be equally reliable and agreeable with each other,
when the light is good and the temperature is above freezing.
Since the Caldwell has its own light, that gives it an edge.