Which one is better? IPhone 5, Samsung Galaxy S3, Galaxy S4, or HTC 1?

I'm looking for a new phone, and was ideally going to buy the iPhone 5. However I hear Samsung Galaxy S3, and S4 are better.
I want a phone that can play a lot of music( which is why i was intentionally going to buy the iPhone 5),
, but how much music can the Galaxy hold? And how to download music from there?
Can these other phones have the same apps?
Please help!

Added (1). I pretty much want a very well rounded phone! Something that's fast, easy to use, quick in loading/downloads, great picture quality, and something that I won't get tired of easily. Great quality videos also!

How to crop curved lined photos?

I want to get a tight crop on my photos that have curves in them. I need to be able to do it on my iphone 5.

Connecting keyboard back to my iMac?

I'm currently using my iMac keyboard for my iPhone because a) I thought it would be cool and b) i needed an essay written and I wanted to sit any where I wanted. But my Imac has a password and there are no keyboards connected. I do not have a USB keyboard.Am i SOL or can it be fixed? I can't imagine I'm the only one who has this problem.

How to block a number from my virgin mobile Iphone 4?

I Really need to block a number on my Iphone, its through virgin mobile because i'm a broke ***, but i really need to know how to do this. I would love if someone could help me.

Steps to brake AT&T contract and switch to T mobile?

I'm in AT&T contract for 2 smartphones. I want to switch to T mobile. What are steps to follow. To get AT&T contract broken; AT&T (iphone and galaxy S3) smartphones unlocked and transfer numbers to T mobile avoiding any service outage.

Dropped my iPhone 4 in water?

No case was on it, took it out in 2 seconds max. When I took it out the screen was working and the phone seemed okay. I powered it down and put it in rice, but now the screen is turning off and on to that white apple screen? I think my warranty covers water damage. Do you think I will need to get a new phone? Thanks

Added (1). It is still sitting in rice.

Added (2). I'm not touching it or turning it on omg. It's just sitting in rice going from black screen to apple screen on it's own, how hard is that to understand?

Why does my iPhone keep freezing?

Sometimes my iPhone freezes and I can't do anything why

Where can i got a white iphone 4s for less than 100$?

I'm wanting to upgrade from my blackberry to an iphone but i don't want to pay more than 100$ for it.new or used doesn't matter at least as it is not broken

Can I use this to make an mp3 fm transmitter?

Can i use an earphone jack instead of a microphone so that I can transmit the signal from an mp3 player (like an iphone) to the radio? If not, can I still use this design but only changing a few thing in order to make it work with a jack instead of a microphone? Here's the page where I found the design http://www.buildcircuit.com/simple-steps-for-making-fm-transmitter/#comment-27599

Is it possible to return my iPhone?

I bought my AT&T unlocked iPhone 1 week ago and I'm wondering if I can still return it. My carrier is T-Mobile so I would like to switch to the T-Mobile iPhone but I need to know if I can return my current phone first.