Best aku2 rom ? light and stable

[fcaeiro]

Hi
I runing imate jasjar latest oficial aku2 rom.
for other reasons (user error) i need to do a hard reset.
I want to use this hard reset to do a rom change maybe qtek

i need most of all stable rom ( i use this pda for work)....
Can any1 advice (qtek ? o2 ? keep the imate ?)

thanks