Any regrets switching from an iphone?

I've had iPhones for years. Starting with the 3GS then the 4 and then the 5. But i'm itching to try something new! Any recommendations or opinions?

Well, smartphones are smartphones… And, well, it all depends on your opinion.
You've mentioned that you have experience with iPhones, and well, basically you know how they work. An iPhone is great for Facetime Calls, instant messaging, and having everything organized in one place, such as, your phone calls, your bills, your checks, your personal life, etc. All of this is in ONE device. If you are this type of person, the iPhone is best for you.

If you want a BIGGER phone, an android or nokia will suit you. An android takes GREAT pictures, and has a bigger screen to see them. Great videos can be played, and, if you have a child or young sibling, there's an amazing child setting that gives your child a limited amount of time on the device, which is better for the child. If you are a fan of this, the android is a good phone for you!

Now, i'm not here to tell you which phone to get, that's your decision. But, look at all the things these phones have,& make a decision based on that.

My friend switched from an iPhone to Android, but regretted it. I have iPhone and a Sony Xperia phone and I'm ok with both. You may like to try Samsung, HTC or Sony phones. Go to a phone shop and try out the devices and see which you like. Samsung S5 and iPhone 6 seem good.