Hello, I am looking to purchase a wireless charger that's a bit faster than the old mophie (https://www.apple.com/shop/product/...ffb83f631ccc984a932ba4f546f82d9d6ddc0fc3b29d6) that I got from apple store 2 years ago. So now I looked at the apple website, they're selling a new Belkin boost up but I'm not really sure if its faster than the old version. also I found another Belkin boost up on amazon saying its 10w. what is the difference between these two? this: https://www.apple.com/shop/product/...7e7c4c947b6339942a2ce8ae3ff44bb353c77d042e51f and https://smile.amazon.com/Belkin-Boo...07CVW6VJC/ref=cm_cr_arp_d_product_top?ie=UTF8 ???