Not me. No reason to, the Nexus does everything I want for my Android phone. I don't see any huge advantages to the GS4 (I used to own a GS3, and wasn't happy with it) and I certainly don't see the extra value.
Totally agreeing. For $650 what is the real benefit an S4-Nexus offers me over the current Nexus 4 at $349 ? With a nice ROM, and good kernel the Nexus 4 is really good, and not an outdated old phone whatsoever.
I like the software keys on the true Nexus phones, the S4 will still have captive hardware keys, and the Samsung logo on the front bezel, no thanks. Ok really what does the S4 offer over the N4 ? Little faster hardware, LTE, SD/Card, and removable battery, uh ok. Is that worth 75% higher price than the N4 ? Not to me.
Today most new phones already come with pretty fast hardware, it's all about the OS, and with both the N4 and this new S4 running the latest and same Android OS, I doubt in real world use it will be even noticeable. So no, this new S4 is no worth an additional $300 over the N4, no way.
For $100 less, next month I can buy a brand new white Nexus 4 running Android 4.3, plus a new Nexus 7 tablet, and save a hundred bucks, over just the one S4-Nexus.