[HTC One X+] KenjiS:
I just switched from my GNex GSM to the One X+ (AT&T version) Have not used the Nexus 4 however, The biggest reason the Nexus 4 was ruled out for me was the piddly 16gb of storage which was already an issue with me on my GNex, But i will compare to the Galaxy S3 which is the other "big" phone out there

Now first off, I was severely unhappy with 4.2 on my Galaxy Nexus which is why I upgraded, it reduced my phone to a steaming pile of.. You know what.. my beautiful decently snappy and responsive GNex turned into a constantly crashing locking up stuttering and slow phone...and i wasnt fond of the changes made to the UI (Especially the useless lockscreen widgets and replacement of the "lock circle" that i felt was the most efficient thing EVER) But I'm going to compare the One X+ to my 4.1 experience on the Nexus since thats more fair

Its not much of a comparison even then, The One X+ kills it in every way shape and form, The phone is smooth to me, No stuttering or hiccups (Not that the 4.1 GNex was bad, but this is just even more buttery smooth) Everything just zips right along even with Sense on top of it, Personally I dont mind Sense, I actually kinda like the aesthetic over stock android in several places, my bigger complaints are ATT related (Namely being unable to tell my phone i dont want it connecting to crappy 2-bar LTE towers instead of 5-bar HSPA+ towers when im on Wi-Fi so it uses less battery..) Google Now was almost shocking at how fast it transcribes my voice and that

Even battery life, for all the moaning people give it, I find the One X+ about as capable, if not more so than the GNex in terms of battery life (At least with the stock battery) Especially since the One X+'s screen is more efficient, Even compared to the S3 I can at worst call the One X+ equal, and struggle to say its actually BETTER in my instance as the S3 was schizophrenically switching from LTE to HSPA+ every 2 seconds and couldnt make its darned mind up... The One X+ doesnt do this, be it better antenna or modem optimization

The One X+ is probubly one of the most... Jekyll and Hyde phones when it comes to battery life however... When doing very light tasks, listening to music, surfing the interwebs, that kind of thing, the battery is pretty darn good, and standby is VERY efficient....

But fire up a game or something that pushes that Tegra 3 and the battery life WILL hurt... My Galaxy Nexus never was that bad as the screen used up more battery than the processor 90% of the time, Even gaming...

Audio quality is a night and day difference, Beats doesnt work for everyone of course (its an Equalizer curve, Nothing more) but in my case it does work lovely with my Klipsch Image Ones, Even with it off the audio quality is fantastic and far more "meaty" than the GNex could ever deliver even using things like Volume+... The stock music player is pretty darned nice too in my opinion and i prefer it to Google Play Music or DoubleTwist, The external speaker is loud as well which is a welcome change, I can actually hear my phone sitting a few feet away, as opposed to having to basically be RIGHT next to me and then hearing the vibration over the speaker...

The camera im a bad person to comment on it, I do photography a lot (if you frequent Photography on the Net you might recognize me lol), I never thought my GNex was all that bad for what i used it for, but yes, the One X+ is far better, I was impressed by the quick reaction time and such, it feels more like shooting a DSLR than a crappy point and shoot from 3 years ago because of this, its definitely better than the S3 which i found couldnt nail exposure worth a darn which in my opinion, made it a far worse camera than the GNex

The screen is gorgeous by the way, I see why folks said its one of the best screens out there, Good black levels on it, good contrast, VERY readable in any condition and i love the coating on it which you can actually keep decently clean without much effort (Again, the S3 collected a layer of oil in the short time i had it which was a PITA to clean off...)

As for Sense, I see why its love it or hate it, I like it more than Touchwiz as i feel its not trying to ape the iOS design school (Not COPY just "imitating" to an extent) and it feels more original, the stock widgets are very cool looking and such, Eventually ill probably switch it to a more stock looking skin but for now to be honest i have only one complaint with it, the Stock keyboard is awful and i cant type on it worth a darn... I'm not experiencing any slowdowns on mine with it '

Look and feel, the One X+ is easily one of the more attractive devices to me because its understated... at least the US one is, its pretty much a rubberized black slab.. I love how it feels in my hand with the grippy rubber coating, i dont feel like im about to drop it or anything... and it just feels like it can take a little wear and tear (I take great care of my devices, when i sold my iphone 4 the person buying it complimented me on how it looked brand new despite being 2 years old.. but lets face it, things happen and i like feeling like my phone isnt a little sheet of very fragile glass when i hold it)

The Nexus 4 is nice and i admit i really do like it, I just dont like the look of 4.2 and if im going to flash a custom rom i figure why bother with the Nexus? The Nexus to me is the phone you buy because you want the Custom Rom experience without going through the hassle of custom romming the phone, the lack of more than 16gb of storage was the biggest reason however, Not all of us can live in the cloud due to data caps or limitations in the data network.. if the Nexus 4 had a 32gb option... I might have bought it.. but then throw LTE into the mix where I am and honestly, LTE is a very nice thing to have, it works great when i leave my house after all and thats where it matters the most

Sorry for the long post guys, but i wanted to give my opinion :)