KCI vs OEM Glock 15rd magazines

I just got came into two KCI 15rd Glock magazines.

I'd heard some 50/50 things about them online, but worth a shot to try out, already have 3 OEM ones.

First thing they loaded like crap. One the first one, it jammed and I couldn't load more then 9rds in. I tried using the Glock speedloader and when you pressed the back of the round the nose of the bullet would go stay up and the rear of the casing would go down. So I took the mag apart and bent the spring slightly so the pressure would be a little bit more even. Then I reloaded it, this time it took all 15rds but was difficult to load towards the end. Was still binding a little.
I shot these yesterday. So far only 45rds through each mag but working well so far, both fed through just fine.
Here is a side by side picture comparison of the two magazines.
KCI left Glock Right

KCI bottom, Glock top


KCI left , Glock right

KCI Bottom Glock Top

Glock left KCI right


Glock left KCI Right


Glock top, KCI bottom


Glock


KCI


KCI left Glock Right