Going RWD will probably help with the man maths, it did for me.
Up until recently I was only really looking at the LR but with the recent range bump of the SR, I went for that instead at £7k cheaper. Sure the LR goes a bit further, but it doesn't go that much further and for me its not enough to spend £7k more. The RWD is plenty fast enough as it is and probably comparable to a 135i at UK legal speeds with its instant pickup (no change down etc.).
Up until recently I was only really looking at the LR but with the recent range bump of the SR, I went for that instead at £7k cheaper. Sure the LR goes a bit further, but it doesn't go that much further and for me its not enough to spend £7k more. The RWD is plenty fast enough as it is and probably comparable to a 135i at UK legal speeds with its instant pickup (no change down etc.).