In the 135-Z comparison the price tag is similar, the performance is almost the same, the deciding factor comes up to the driver and if you have made some mods.
But again people can say that they are different cars since the Z is a 2 seater sports car, and the 135 is a true 4 seater luxury coupe. So it depends on what do you need.
As much as i love to drive my Genesis, a 135 with a simple Jb3 upgrade will kick my ***, but if I encounter a Z I may try to catch up and hope that it overheats
