I have the Brown Dog rubber, they are pretty strong, but not the smoothest.
the Mountain Off-Road mount built around an LCA bushing looks really smooth
I ran the BD rubber mounts for over a year before my wife asked to 'fix' the Jeep's problem.Although it's possible BD sent me poly's instead of rubber. They were intolerable for my DD!
I have the Mountain Offroad rubber units for more than 10 years and they do transmit plenty of vibes at idle.
Dealer mounts are about the best you can buy for a daily driver. They are soft and last a long time. If you have any engine vibes you will notice them in short order with an "upgrade" that you don't need.
Leaning toward brown dog. But anyone have any experience with these? https://www.amazon.com/Cherokee-Lit...99362612&sr=1-4&keywords=jeep+xj+motor+mounts