Originally Posted by Lottodaumas
Read more? .. so that you'll have a better idea of what would be best for you. Touchwiz (S5) and Nexus are almost antithetical UI experiences. So it's an odd comparison. If you strongly favour either one, then you'd be unlikely to really like the other one.
It's easy to debloat the S5 though. A simple search will find many threads on debloating the S5. But arguably the best way to proceed is to root your phone then install a custom ROM
. A custom ROM is a ROM that is already debloated and optimized to run on your phone. Custom ROMs vary from basically 99.9% stock (just debloated) e.g. XtreStoLite. To ROMs that add a lot more customizations e.g. Phoenix
As to rooting, Towel root is the method most people prefer and it's basically just a click or two. Look for the prominent Towel root thread or you'll find links to it on most custom ROM threads. Note that Towel root only works on pre June 6th firmware builds. So if you have a very recent firmware you'd need to first write an older build of 4.4.2 firmware to your phone. Then root with Towelroot and flash a custom ROM.