Consumer reports is also good for telling it like it is.
www.consumerreports.com
they take NO advertising and purchase every product they review with their own money. Zero influence. They have some stuff on this but I think it requires pay subscription which is understandable considering "no advertising" and that they buy everything!
curious what they put out in front these days.
TFLG - you would not want an infinity focus if you are shooting to get a closeup of a plane in the air with shorter depth of field so the background is blurred. If you do this you can keep the plane in focus as the foreground object of interest and blur any background. If you do infinity focus then I think you are likely to not have as much zoom and background could distract viewer from the object of interest (plane/heli).