Bill Tindall, E.Tn.
May depend on what one does with a plane. I almost entirely fit parts with my planes, drawers most recently and case parts before that. I never plane large surfaces. I have gravitated to the lightest plane in my collection, a Stanley 605, here fitting the height of a drawer front.

I took a heavier LN plane to the class in the Headley shop. Steve Hamilton picked it up and declared it too heavy. (This shop uses planes similar to what I do)

So there are two cases where a lighter plane is preferred. For the undecided, using a plane will eventually tell one what is best for them in the kind of work they do. I suggest being wary of other's advice on the matter.