Poor mt6732 (which I think it's the best quality/price/energy consumption SoC Mediatek ever released) really doesn't get much love from manifacturers, this device would have been a total different story with it (and it's t760) on board, for just a few bucks more.
seems a bit confused as a poll, I'll post my considerations but I won't thick any box because as dalyer said usermau has many roms :)
I'd go fo maucat's latest AOSP for now, with A310 as a close second.
As for the manufactorer's ones, if I didn't have lag in whatsapp notifications with it Emui would had easily won, Hive UI is on the ugly side, but fully functional.
hmm, if it stayed 5" and if it had mt6752 I would have been very very interested... mt6753 seemed a full step down compared to mt6752 and from what I said in benchmarks/previews is not much an improvement over mt6732 (which is a quadcore, GPU is probably even weaker), so not a real important step forward compared to our mt6592... a big "no thanks" from me, waiting a real F1 successor :D
the phone has been (and for some aspects partially still is) the best 120-130 euros could bring to the table, the phone had/has (almost) it all and everything included is good quality, that's what I like. They cut the right corners (sensors, rom space, battery just enough for daily use ) to give quality on everything else (camera, screen, audio, processor, RAM and internal not visible but quality components, llike gps antenna, wifi etc..). Let's not forget that mt6592 was freshly released when the F1 was released (TD version on february) and paired it with a gorlla glass and a sony imx135, so they really sold the machine for a strict profit compared to what competitors offered on the same range... huawei was selling the 3c (mt6582) at 140-160€!
Software-wise yes, coolpad could have done a better overall job (not a single bugless rom, even if we have very close ones), but they gave a major update and should have another one coming in weeks/months (along with thousand of minor weekly updates), so at least we have to give them thumbs up for this, only very few brands (not only in china) do this.
Long life to the mighty F1! :D