I remember test driving my X5M and getting totally disappointed with the lag. Seeing my reluctance the owner made me drive in the M-mode which still didn't impress me much
Why I bought it then, I guess there's nothing equivalent out there in this league not to mention, I had to scratch the Itch
Honestly, I was very close to selling the thing until I tried the SB and wow, what a difference in response
Love the ///M now