Hi,
I've recently moved from the iPhone 6 Plus to the s7 edge and am really liking it.
The customisation on this device is awesome.
I still find myself looking at the screen on the s7 edge and thinking...... WoW.
Especially coming from a sandboxed iPhone and iOS which I felt the need to jailbreak to unlock its true potential but did come with ramifications.
The freedom to put an App icon where I want to On the homescreen may sound insignificant to some but coming from iPhones it isn't.
I'm still using TouchWizz and purchased the SB Theme from the theme store. I've looked at Nova Launcher but not taken the next step yet.
One thing I did come across was Google Chrome creating battery drain connected to MediaServer and Chrome. After stopping and disabling Chrome,and using the Samsung Internet Browser all is good.
I've heard there are nicer text Apps than the stock one but again I haven't taken the next step.
As for other apps in the PlayStore that's very much a wants and needs thing. I'd say just read any reviews for them.
This helped me.
https://youtu.be/9NiqZqGeHg8