in my opinion, trying to figure out which binoculars to buy is about as personal of choice as one can ever make.... kinda like buying camera equipment.
I was taught to never to touch or use another persons binoculars without express permission, as they are an expensive and sacred item, and mostly because they're "Not Yours"...
so I could never give a gift of binocs to someone due to the personal choices that go into deciding what to buy. I believe a gift certificate for binocs is a better way to do it.
I have always carried two sets on my boats, mine and those that others can use when they want to... It kinda tweaks me outta joint when I need my binocs and they are out of focus 'cuz someone else has been playing with them

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but for boat use, I highly recommend that you get a set that has image stabilizing and has a waterproof rating, and then you can go up to a 10x50.. anymore power than that gets really expensive in the IS type. otherwise, without IS, the 7x50's are as powerful as you can use if you actually need them, unless the water is calm flat...
the prices have came down on the IS models in the past few years and they are easy to view with even when the conditions are rough.