I am looking for a multi purpose binocular (watching airplane landing, looking mountains from 2 miles away, sightseeing). I am about to get Leica UV HD+ either 10x50 or 12x50. I have tried these two binoculars at my local Leica store and was wondering if any other model of Zeiss better suits my demand. Need your advice forum brothers, 10x50 or 12x50 since I will be watching a moving airplane or other recommended binoculars. Thanks in advanced.