So, for the meantime, I appear to have this phone on hand. I switched from having a Galaxy S3 from Boost Mobile and its 4G LTE to this phone, unlocked, with T-Mobile.
I myself am disappointed with the fact that it's not true LTE; that said, it's actually quite shocking how the HSPA+ service, even here at home, gets me on average~ 8Mbps/1Mbps whereas even on my best day, Boost Mobile's 4G LTE anywhere outside of downtown phoenix was barely even 1mbps download. Without going into too much of a rant, even when I did see LTE-worthy speeds with Boost on the S3, I couldn't use it in any meaningful fashion, so this BF I was trying to get myself an unlocked Note 3, but they didn't have any available. And I was at first going to try an Xperia T2 Ultra, but the only unit available was being sent back to Sony. So this was the best available option I had.
Though admittedly I'd still try to see if I can (re)exchange this back for an unlocked Note3, I suppose I should ask how to make the best of this thing. Already wanting to figure out how to root it so I could install some proper adblocking utilities, and try to make the most of its integrated battery.
Another thing I do find disappointing though... is that the screen seems overly dark when playing video, whether it's netflix, youtube or even flash player (through Dolphin). I get the SGS3 had some dynamic contrast, but is there something similar that would make things better on this phone?