The i5 feels better to use but Android has become more powerful in the way of function.
iOS is more polished but the simplicity is more of a fault than a pro at this point.
With the Android notification system and default power management widget, any android device is instantly more usable than the i5 in terms of getting to data, acting on it and accessing common device controls (wiif, airplane, gps, bluetooth, etc.).
There's a HUGE lag in Android's reputation, comparing any version of iOS to anything before Android 4 and I'd have to side with iOS in terms of responsiveness and polish. Even though it took more steps to get things done back then compared to their android counterparts the lack of lag and bugs seemed to make it less annoying.
The Android 4.0+ devices are amazing. Fast, lag free, extremely functional and overall powerful. You can get in and out quickly without jumping through hoops (albeit, very polished and good looking hoops on iOS).
This all being said, if you're more of an app user, aren't under the gun for time throughout the day, don't take the subway, have wifi pretty much always available and and don't want to fuss with 3rd party syncing of your iTunes, you just can't go wrong with the iPhone. But if you like any of these android features, are a more typical type of power user, don't mind installing a 3rd party app to get things to sync up then Android's features and flexibility will make your life easier.
Everyone is different and use's their phones differently, while I wished I could have kept and used the iPhone 5, iOS right now isn't there for me. I replaced it with an Android and have my home screen ready to rock with my most common used settings, most dialed contacts, the play store, browser & maps. I can interact with any new messages, emails, missed calls from the drop down notification (which is persistent on Android). Heck, even the calendar widget saves me from having to open the Calendar app itself, the same for widgets of my Google voice and Gmail inboxes. I have Twitter & Facebook widgets also added, plus Play Music and I'm set. It takes all the things I used in iOS, puts them front and center and it saves me time when I need to.
I do miss the feel and polish of the iPhone 5, though in my vert short time with it, I didn't like how I couldn't make it my own. My Mac is my own. iOS is too generic between everyone to really be the way it needs to be for an individual user who wants it their own way, which is fine for an app launching platform like a tablet, but it's hard for some to have their phone kind of locked in. There are plenty of people who this fits just fine with, and I'm kind of jealous of them...
An Android phone can become YOUR android, an iPhone is Apple's iPhone.