This would be in my GT car consideration set along with the RS5, M3, C63.
Most derision I've read for the RC F strikes me as being bound within the general Lexus dislike.
I would also group it with the above. But for pure fun / panache / heritage value, I would choose one of the Germans.
Lexus have aced reliability, but apart from the LFA, I just don't get a feeling of 'passion' from their automobiles, they leave me cold.
Some people value reliability over character, not me. Each to their own.