Ok to answer your statement regards ' hows is this phone performs? '
Well, i' still on stock v10e rom, everything is good so far, UI is smooth and silk, well a big leap over v10a when i first get hold of this phone.
To be honest, tegra 2 performance is not what i expected to be, at least its a dual core proc, youtube video above 480p will shatter when play, browsing experience is also not top notch, but still its a phone afterall, other then those 2 problem which i personal not impressed so far, this phone delivered a sturdy performance. Screen is good (lets dont talk about the bleeding screen), colour is vivid and contrast is great in LCD leagues. Gaming is what this phone lives for, i've throw all sorts of games across my device, fluid gameplay i must say at almost all games.
Battery is decent at least for me, light usage with 3G on would last me around 3 days while moderate stands around 50 hours which is think is good.
Conclusion, this phone served me well, balance performance in multiple aspect, well deserved to be cheapest dual core around.
Regards.