Nothing worth of flashing for me as their is no kernel development atm.
There are roms (CMs unofficial & Bliss official) including CM 12.1.
Waiting for loli that they finally polish new memory allocator & fix leaking. Interesting news is that Art (compiler) is getting optimized for 6.x & will bring about 25% performance gain (wile costing 10% more time to compile).
Compared to Moto G (2014) S3 Neo have some advantages; 1.5GB RAM, 16GB two tires faster NAND (Moto G max also have 16GB), Super Amoled HD display. Software have good & bad sides compared to vanilla, I mentioned some good additions, on performance side single core speed is up (shows in browser tests) but GPU performance & multicore is little down (even it's clicked 200MHz more). O yes one more thing S3 Neo don't have 4G LTE, it have NFC but I don't find any of those crucial especially where I live.
I know & I am interested in unified (3.10) kernel project. It's easy to root S3 Neo also thanks to chainfire & with ODIN; http://autoroot.chainfire.eu/
I am actually presently surprised how stock (4.4.2) works especially as it's Samsung as UI, home button & contact's are not lagging at all. It didn't cost much (170€ in land regularly shopped) & they didn't put to much bullshits on it. Good thing about stock are mostly: good camera & Adopt Sound, only thing not working as intended from time to time is illumination sensor (tied to all Samsung midels). All in all I am satisfied & that whose not easy to accomplish from long time Samsungs hater like I am.
How's going guys? How are the development going for Moto G? For my S3 Neo their is nothing significant wort of playing around. Their is CM(11,12) & some relatively interesting ROM's based upon it (including some official ones) but no reply interesting kernel work at least interesting for me. Where are you anyway? S3 neo stuff is at Xda. Wanted to get to Moodingg & ask him how is he doing. Looks we are again stuck to old 3.4 kernel all do their is some on going effort about unified MSM 3.9 for Sony... Anyway best regards!
Actually S800 is still a kicker especially A330 compared even to new S615/MT6752 its still faster CPU vise & GPU is around 3x faster.
If you can find nice phones with it & SD card support for lo price of 250-280€ then they represent best buy. There are phones with it that whose not popular like Xperia Z Ultra that I found for 243€ for cash payment & I don't think it can go brother than that.
Or you actually can. This one is for those who like that their phone can fit in they pocket & its very very nice for 249€. http://allviewmobile.com/x1-xtreme-mini.html
Their is also a big brother for 299€.
This one promises longevity with 3GB RAM, 32GB storage and it's also selfy with 8MP front cam. But guys don't expect much from Allview when it comes to software updates & costume ROM's. At least you would be buying an genuine EU made product.
Because we all hate Intel and imagination closed source GPU's. They probably should gift some to kernel dev to get them rolling. I mentioned about S1 source... ;)
I am concerned more about cellular radios battery consumption than atom's or GPU as it looks that zen 1 & 2 are using Intel in house ones based on really old 40nm planar lithography.