i've always had an iPhone. i have an iPhone 6 currently. if you want the later iPhone's, the headphone jack is gone. so if you charge often while listening to headphones plugged in, you'll need to use the adapter dongle it comes with. or other additional accessories as required.
my advice is to go to a store like Best Buy, or a carrier store like Verizon. they should have the latest phones on display from all brands. go and play around with them, and talk with an associate for help on features or see what's different from each phone. see if they have a switch or return policy if you don't like it, you can get the other brand.
watch videos on YouTube of people who've switched themselves, or try's out new phones and gives their opinions.