We're debating between the new 2015-2016 C63s which is a beast and the older 2014 P85 plus. Both are in the low $80k. I know one's electric and one's gas so may not fair comparison. One will be a couple years old and one will be brand new. But we love the luxurious interior and style and the amazing torque of the c63s. I haven't driven it though. I have driven a regular P85 (not plus). Hated the interior but loved the immediate torque. The c63s is slightly faster with 0-60 in 3.9 seconds compared to the p85 plus time of 4.2 seconds. If anyone has driven the 2015-2016 c63s can comment, would love to hear feedback.