If you want the fun and excitement close to the German's and budget is no issue, I would go for the RC-F Track Edition. Check it out...
I love my RC-F, but I have been with Lexus for 14 years (3rd car) and I enjoy the mix of luxury with v8.
I am told by M4 and AMG owners that my RC-F feels and drives with much more luxury, but the Germans will always beat you on track.