So I've been an Android user for the past 3 years, and was using a jailbroken iPhone 4 prior to using Android. I made the switch to Android since it's basically open source and fully customizable right out of the box. However, I've started looking at the iPhone 6S Plus and thinking of returning to JB. I feel there are some ways that JB is more customizable than Android is. So here's my question and concern and hoping someone here can help me, since the iPhone 6S is going to be a whole lot faster than the iPhone 4 ever was, is there ever a point where your JB tweaks causes too much drain on the battery or memory, thereby ruining the experience? I remember with my JB iPhone 4, I ran into a lot of memory leaks and battery drain, and it eventually became too difficult and frustrating to keep a JB iPhone. Hope someone has had a similar experience, going from iPhone to Android and back after X amount of years, and seeing the difference in speed/battery improvement between three generations of iPhone. Thanks!