IPhone 6s (16 GB) or iPhone 6 (64 GB)?

It, s going to be my first apple product so have heard from several people that i would give on a small space but i have enough money that i can even buy a 6s but with only 16 GB.
On android i stored 400 songs & most of the pictures had i upload on social media but delete on my phone so out of 8 GB on android i used around 6 and in SD card out of 8 i used around 3 or 4 Gb, s.
But i also want a better technology like 6S so what should i buy?

How to whatsapp transfer without iCloud?

So I recently broke my iPhone and it won't turn on now. Is there a way I can transfer my old whatsapp messages onto my now phone via iTunes? (I did not back up the messages on iCloud)

How to remove apps on iPhone from not on this iPhone in itunes?

Sorry if this question is a bit confusing. But I have an iPhone 6 that had 26 gb of data and I need some room. This is when you go to the App Store> updates> purchased> not on this iPhone. All these apps are taking up too much room and I just want to delete them. Can anyone help of you can even understand what IIm asking for?

IPhone 6 won't update or connect to Wi-Fi?

I woke up yesterday to find my iPhone 6 had unconnected to Wi-Fi and when I try to enter password it says it's wrong even tho I know it's right. I've turned my phone on and off many times. Rest networks, unjojned networks, and more. And it keeps saying update failed every time I try to update!

IPhone 5s hombutton not working properly?

Ok so I don't know how this happened, but my home button does work it just won't bring me back to the homescreen? Like it will work for everything else (Siri, closing recent apps, etc.) the only way I can get to my homescreen is if I go onto recent apps and tap the homescreen. I've tried using assistive touch, it works for everything else except homescreen? I tap on the home option and nothing happens… But it works for Siri? Oh and also control centre won't work. I can't swipe up from the bottom to open it, and on assistive touch, I tap the option - nothing happens? Someone please help as soon as possible thank you so muchhh

IPhone 5s screen turned black and I can't see anything on the screen?

My iPhone 5s screen turned black without warning, while I wasn't using it. I have the assistive touch icon on and it still shows on the screen. My home button is broken. I can see when I change the volume and I can receive calls and notifications, and I can get to Siri through my assistive touch. I've read that I need to reset my phone, which I can't do while my home button is broken. Please ask for more details if needed.

How to make an iPhone 6 Plus case fit an Iphone 6?

I bought a really cool silicone iphone 6 case but when i ordered it from amazon, I was half asleep and so i didn't see the part where it said iphone 6 PLUS and so when it came it was slightly big on my phone is there anyway to make it fit