I used to own the Jet Black 7 Plus and I put it in a SwitchEasy Glass case which was designed for it. The high gloss of the Jet Black’s back case is a super fingerprint and scratch magnet so once you have those case marks or micro scratches on it, there’s no way to polish it out.

I'm also using both and both have their pluses and minuses. It's not a matter of which is better than the other, more of which OS you prefer to use.

I've loaded both my iPhones and iPad with 16.4, so far so good.

I use it only when I know I'm low on batt but won't be getting back soon to charge, so I'd stick it on the back.

Apple's MagSafe Batt Pack is only meant to top up in an emergency or urgent basis which will last your phone to get to a proper wall adapter.

Most probably. Remember when they launched the case with MagSafe charging? It’s sold as a whole set and not case alone.

Seriously, what’s so NSFW about a MagSafe charger?

I have the MagSafe battery pack and do note that’s it’s not for handling multiple charges, but more for ‘emergency’ use to top up your phone’s batt sufficiently enough for you to get to a proper charger. It only has over 1000mAh capacity.

My main battery pack is a Mophie Powerstation 3XL with 26000mAh, more than enough juice for multiple charges.