The 15x70's are kinda standard. Pretty much any brand and model will do, provided it is waterproof (safer to use in cold and/or humid weather, but best of all, I simply shower my binocs to clean them). I think all 15x70's have higher transparency BaK-4 prisms and full multicoatings, and many have the same optics under different brands. If they're in the same price bracket, they're probably clones.
However some are quite heavy, like the Orion Resolux. Check the specs carefully to avoid dealing with shoulder fatigue. 12x60 or 15x60 binoculars don't show much more than 10x50's and 12x50's unless they're in the very top-end where contrast and sharpness are outstanding, but then you will pay more than for a good mid-price 70mm.
Clusters that appear barely there in my 10x50's are more much peppery in my 16x70, and the latest Celestron Skymaster gave very nearly the same view, without the battleproof armoring, though. Celestron's most recent 15x70 is the $160 Cavalry, said to be very good (a friend bought it but I have not tried it yet) but earlier models lost alignment when bumped hard.
I don't know if Celestron solved that little problem. If they have I might sell my Fujinon, buy the Cavalry, and put the spare cash in eyepieces. But only if I'm sure, word from the forums will decide that.
TS 8x40 Wildlife, 10x50 Marine - Fujinon 16x70 - TS 80mm triplet, 6x30 finder, EQ-3 mount, TS 2" 99% diagonal - Celestron C5+ and 6x30 finder, DIY tripod - 5" Bahtinov - 12" GSO dob, 8x50 finder - Hyperion 24,13,10mm 68° - TS Expanse 17mm 70° - SW 7mm Panorama 82° - Ultima 2x barlow - Astronomik UHC-E filter - Baader O-III - Astro Solar 5" & 80mm filters - Sky Atlas 2000 - Rükl's Moon Atlas - Canon 400D - 5mW green laser