Smile [Q] is Sp is good choice to buy

Hi, I've a sony Lww want to buy a new Sp.. I read a lots of post in some forums talking about problems and more problems regarding this amazing phone and I have some fear to buy because of these comments. What yours suggest me on this? Any people here have one and can tell me about it? Did yours recommend it?
i prefer hard multitasking , high end gaming ,..
i m always connected to the Wifi so i need good battery backup
n music ( ofcoz )

what is u r reviews upon this phone
as consider my need