Either you want a kestrel link with a rangefinder or just the kestrel elite.
As far as is it worth it, is you're shot worth it?
Pro- kestrel is dumb proof. Relatively
I'm sure someone has tested that.
Con- you still have to know what the data means.
Pro- AB software is some of the best out there
Con- wind is only at your location
Pro-kestrel has advanced settings for advanced users. Like the quick wind function. Most of us that know what it is (most military snipers) already know how to do it in our head, it's nice to verify.
Con- still have to know how wind works.
Pro-accurate to within 1 mph
Con- still have to know what that means, and how to negotiate between wind average and high wind.
Pro- stand alone unit (or as mentioned above), or can be stacked with redundancies. One lithium AA has been more reliable for me than my phone on day 5 in the field.
Con- batteries are batteries. Bring an extra.