I picked the 650s over the 12c for a couple reasons. The front end of a 650s is so much more modern and even today doesn't look dated at all, also it resembles a p1 front the front if you squint your eyes hard enough haha. The 650s also gets a reworked motor making a bit more power. I also think the 650s are a bit more reliable with being a later built car so the gremlin and other small things were fixed (im not 100% sure id ask the mcmedics as they know more then most dealers). For me I went into car shopping with a budget and just tried to find the best car that met it, i was looking at r8's, 570s, gt3s, etc but ended up on the 650s as it had the best looks and performance. I was thinking of a 570s but i really liked the active rear brake and the hydraulic suspension. I think it all depends on your budget as maintenance and repairs do cost a pretty penny and that is the most important thing to spend your money on.