The new Mustang with the IRS, I might consider in a couple of years.
Dodge? Run like hell.
WRX/STI is probably decent but the motor is basically the same one from 10 years ago.
Hydroplaning is mainly related to tire width and tread design. But a car that weighs 400+ lbs more than the Z won't hydroplane as much, all other things being equal.
These are my biased opinions.
I used to have an STI and I liked the car. It was no Z, as far as feeling sporty and cornering and stuff.