Hi, I'm looking for a new battery pack. My old battery pack of 5000mah seems to be too small these days, with more and more portable electronics requiring charging and phone batteries increasing in size, so I'm looking for something to replace that. I would like to get USB-C for fast charging. The Anker Powercore looks pretty good, but I'm wondering if there are any cheaper options that are recommended, or if I should just pay the extra monies to get the anker. Thanks!