Re: My iPhone 5 has a loose home button?
I've had my fair share of Android phones (As well as Windows Phone, BlackBerry and MeGoo which is Nokia too). Lastly the Samsung Galaxy Note 2. Once you've seen and fellt a high-spec Samsung phone you've seen them all as they all look and feel the same. Shiny smeary plastic with round corners. They are good phones but too bloated and the build quality of my iPhone 5 feels amazing compared to Samsung. The HTC One has great build quality when properly assembled but it you search it has had its fair share of quality issues just as previous HTC flagships. Even Lumia's have quality issues. My first Lumia 800 had the screen raised well above the body. My second one had a faulty screen. Third times was the charm there.
I realize you have been unlucky and have had a bad experience Nikolas with Apple. But do not think Android/WP manufacturers are any better you can easily get a unit assembled on a Monday there too.
And don't expect an Android phone to operate all smoothly. For that you need to get yourself a Nexus device that is pure Vanilla Android without any bloatware (even then they are not as smooth as iOS). Samsung, Sony, HTC and everyone else's versions adds a sense of lag to them. They are not as responsive as iOS when you touch the screen for the most part. They will often feel choopy and doesn't follow your finger naturally at all times. My mother has the latest Sony Xperia Z and I straight away fellt the choppines of the system. It's just not as responsive and feel laggy. And when I talk about lag I don't mean lag in the correct sense. I mean framerate drops in animations.
Good luck with whatever choice you make!