70mm binos are big and heavy. I would not get one for hand held use. The 10x and 11x70s have a fairly narrow apparent field, significantly narrower than a 15x70 or 10x50 will have. In fact I think the 11x70 and 15x70 have the same true field.
If you are finding that you can hold your 10x50s steady enough, I'd recommend to get a better one for hand held use. The AOE HG models are amazingly good if you don't want to spend hundreds. As good as brand name binos costing over twice as much.
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