I don't understand why so many people in the Apple vs Android debate are completely oblivious to the fact that Apple is just a lot smoother transitioning from task to task and handling lag so that the user doesn't notice it. I've been a majority android user (Droid 1 '09-'11, Galaxy Nexus up to today) but I did purchase a 5s last year, which is currently waterlogged due to lending it to my mother.

I borrowed my mom's 3GS and even though it is quite slow, it has a magical ability to accurately detect and respond to my inputs as I would expect it to. Even on my Galaxy Nexus I have trouble with video lag switching between tasks, very long delays between my input and a response, and sometimes complete ignorance of my inputs. One of the most frustrating things for me when using the device is opening a web browser and trying to type a query into the search bar without having to wait for it to do who knows what in the background and attempt to load the last page I was looking at that I have no desire to see, while ignoring my spam clicking of the "X" to try to get it to stop.

Not to mention the app support for the 3GS is amazing compared to my Droid 1. I certainly can't get all the latest apps, but older apps still function extremely well, it really lives up to the UX hype. My Droid 1 can't even run YouTube anymore.

It's obvious that the advantage Apple has is that it has it's walled garden, closed hardware/software ecosystem. But it really shines in making the devices usable.