I like the smoothness of the hydraulic motor mounts, I realize they fail though.
I don't mind if they last say 5 yrs, but I don't want to put hydraulics in and have them torn apart in 3 months - my car is a 5spd, and I suspect this is harder on the mounts than the automatic anyways.
What do the solid rubber mounts compare to the hydraulic mounts as far as smoothness when installed.
A few years ago, I had them changed on my 1990. They were definitely bad, but not feeling too rough - when I picked up the car with the replaced OEM mounts, it had 'new car' feel!