JB hangs/freeze alot

hi guys

my N7000 hang/freeze a lot with XXLT5... worst battery backup and always freeze n stuck on some app or on some screen..due to this I have to wait few min. in front of my friends which is very embracing situation.. its literally stuck either I have to wait or I have to restart my phone.

I did flash completely with all wipes but still it happens :(:(:(


Please suggest me what to do??? Or any other JB Rom or ICS or GB? please tell me I can move to any rom..

Thanks in advance