After a few days use, here are my thoughts.
I will be staying with the Nexus 4 16GB
Things I noticed the past few days:
Nexus 4 Screen is terribly calibrated out of the box. When using Franco Kernel and his recommended settings, the screen is on par with the One X+. I even preferred it at times over the One X+. Stock - It's no comparison the One X+ is much better out of box.
One X+ Camera wipes its rear with the Nexus 4's camera. It really is that big of a difference indoors. Outdoors in Sunlight, the Nexus 4 is decent - but the One X+ really does smack it around pretty much all around.
The real reason I'm staying with the Nexus 4 - It feels so much faster and fluid in hand. Although the One X+ often outbenches it in CPU/Ram benchmarks, the GPU on the Nexus 4 is much much better than the One X+ and thus the phone feels more fluid. Maybe this is just sense related, but even with Custom Roms I just could not get the One X+ as fluid as my Nexus 4... and this kinda bothered me to the point I'm going to keep the Nexus 4. The Nexus 4 also feels in hand better, and has a more premium feel to it. The Tegra 3 sure does like to eat battery and get hot. It's worse in this regard than the N4 which kinda surprised me. CPU app's were fine, but anything that required the GPU to be utilized, like even games like "Candy Crush Saga" which I play, would make it eat battery like crazy.
The other big kicker is I bought the One X+ without checking out the Dev Scene which was dumb by me. I know I will miss this with the N4
Overall - I do believe the One X+ is an amazing phone and a better featured phone overall. The Camera App alone (and quality) is a huge selling point. But call me OCD but now that I'm used to the S4/320 level of smoothness, It bugs me that a high end phone lags just a smidge. Not enough to say it lags, just little quirks here and there.
Time to re-flip the phone - hope to break even.
DROID DNA Users - How does Sense 4+ perform for you? Just wondering if you notice any little quirks like I did on the One X+ .... I suspect the S4/320 handle it better, even with 1080p?
Don't get me wrong - the One X+ is a fast phone. It just has a little quirk in fluidity here and there that the N4 doesn't.