I think current tocuhwizz is alright actually, certainly far better that it was.Samsung makes great hardware, I'll give them that. Their screen display tech is top notch, and the SoC is one of the best.
But man, Touchwizz just blows, really hate it. When you have an already awesome OS to use, stock vanilla Android.
I read another compare Touchwizz to like installing Windows 95 on a brand new custom computer rig with the latest hardware. That computer may have the new Skylake platform and Intel 6700k compressor, and GTX 980Ti card, but it's ran by the outdated, ugly and crap Windows 95. That's Samsung's Touchwizz on their new phones.
The problem in general with android is the lack of speedy updates.
With an iPhone you know what your getting , as soon as Apple release the software....boom I get it.
As soon as Google release the software...erm we wait a few months, the wait a few months more. Then Samsung release the software....then we wait a few months for carriers to release the software.
It's pathetic really and it's pathetic Google have next really fixed the overall problem.
You can be waiting a whole year before you get the later Google, and by the time you get it, it's already outdated.
Now in terms of Samsung....the s6 and s6 edge are amazingly great phones, with hardware and quality on par/even better than the iPhone 6.
However they need to roll their heads a little bit. They are trying too be too like apple, however if people wanted phones like iPhones then they would buy an iPhone.
Sd card slots
Removable batteries
Water proofing
These are things that stand out against the iPhone , instead of getting rid of such features , embrace them!!