FG hands down, no comparison. At the end of the day, a BF is just an upgraged BA. FG got miles of improvements on top ranging from engine(head, plenum etc) to handling, interior and instruments, high output fuel pump, bigger injectors and modern looks. I could go on all day, someone post up more upgrades if they want, its never ending. Who gives a f*ck about the max turbo output. Youll be up for a turbo rebuild sooner rather than later in the BF anyway if it hasnt had the screen done or the oil line checked regularly which most of them dont. The valve springs were carried over from the bf. I get in my mates bf f6 and it feels very dated. Dont get me wrong, awesome car but f*ck going backwards if you can afford an FG. Worlds apart from the B series and I absolutely love mine, never had one single problem with it. Soon to be in a GS hopefully.