[Galaxy S 4 Q&A, Help & Troubleshooting] jtc276:
Update:

I've been thinking long and hard about this dilemma for the last few days and I've finally made my decision...I'm just going to wait.

Next month when the S4 and HTC One are both released, I'm going to take a trip to the AT&T store and make a hands-on comparison between them and the iPhone 5. I'm not loyal to any brand (I've owned devices from all three companies, all of which have been great), so I'm just going to pick the one I like the best. What really made me begin doubting my choice to get an iPhone 5 is the large price for the 64gb version I would have to purchase in order to store my music collection. $400 is ridiculous for any phone on contract. However, if the S4 has subpar audio quality and the HTC One underwhelms me or AT&T doesn't offer the 64gb variant, I will more than likely be splurging for the iPhone 5. But, after thinking about it, I really don't want to. While messing with my Nexus 4 today, it hit me hard how much fun I've had with Android. It's the most powerful, dev-friendly mobile OS and it truly gives the user the ability to make their phone their phone. And I feel like purchasing an iPhone would be going against everything I've enjoyed with Android, even if I still do have a Nexus 4. So, if at all possible, I'll be purchasing either the S4 or the HTC One (I'm growing fonder of it with each passing day). But if the storage and sound quality expectations I have cannot be met, I will more than likely buy an iPhone 5 simply for the fact that I made a promise to myself that my next smartphone would also be my MP3 player.

I'd like to thank everyone who posted in this thread and helped me make my decision. Many of you actually did bring up some very helpful points and made me seriously consider what I should use my upgrade on.

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I've been conflicted lately. My mom recently bought an iPhone 5 and I've sort of fallen in love with it. I'm no fan of the home screen (it is very, very boring), but the apps are amazing and the audio quality (both external and internal) is great. I'm also not very bothered by the screen size. In a way, moving to something smaller is slightly refreshing. However, it's still an iPhone and I think there's a possibility I could become bored with it...but when I consider this, I remember that I do have a Nexus 4, so I wouldn't be abandoning Android completely. And so here's my idea:

Option one - Keep Nexus 4 (I'm keeping it either way) and buy a Galaxy S4):

Benefits:

Both run Android, though one is skinned with many new features

The Galaxy S4 is a true flagship and should excel in all areas the Nexus 4 doesn't (camera, etc)

I'm sticking with one platform

Negatives:

Android is getting a little old to me and the Galaxy S4 might bore me even more than an iPhone 5 (I'm eagerly awaiting Key Lime Pie; the ICS/Jelly Bean look is wearing thin on me)

The S4 with the S600 (the one I'll be getting since I live in the states) will not have as good audio quality as the iPhone 5 (internal or external)

The Galaxy S4 isn't a huge upgrade over the Nexus 4 and could even be considered a "needless purchase" (not that I really care; I make a ton of those)

Option two - Keep Nexus 4 and buy an iPhone 5:

Benefits:

I get to keep up with the two largest mobile platforms

When I finally get a Mac Mini, I'll have integration with it

The apps are great

Audio quality is great

Build quality is amazing

I won't have to wait for updates through the carrier

I could keep up with Android through my Nexus 4

The battery life is probably longer than the S4's despite having a smaller battery

iOS is really smooth and browsing is honestly a pleasure (not that it's not on Android; I just find it to be a bit better on the iPhone 5)

If I end up hating it, I can sell it and buy a Galaxy S4 (I would buy a 64gb iPhone 5, so it would definitely cover the cost of the S4)

If I end up loving it and want to buy the next model, I can sell it on eBay at an 85% resale value (great thing about Apple products)

Negatives:

The iPhone 5 is six months old (I would have to sell it on eBay for the next model pretty soonish)

I'd maybe have to rebuy some apps

I would sort of be be betraying Android, an operating system that I truly love

I'd have to find a way to wifi-tether (but this might be a problem on a carrier version of the S4, also)

Anyway, can anyone help me out with my decision? And please don't say anything like "Get the S4! iPhones suck!" Actually observe what I have written above and help me decide what the best choice for me is. Because right now I am ridiculously confused and have no idea what I should use my upgrade on.