So I currently own a 2009 S5 and I absolutely love it. Im in the market to purchase a new car and Im looking at the m3 and is-f. I prefer Lexus to BMW but the M3 is the king and has been for years. After seeing this video I'm kinda torn. What should I buy?

http://video.ultimatestreet.com/video/22336/bmw-m3-vs-lexus-is-f-top-gear

HI, thanks a lot for this. It really helped me out!