Corksport polyurethane inserts are pretty stiff.
When you start your car, it feels like someone slammed the firewall with a sledgehammer. While running, the whole car transfers all vibrations of the engine to the cabin. If anything is loose (CDs, coins, etc.) in the door pockets, cup holder, or coin holder, it is going to shake.
There aren't many options anymore, I would get AWR mounts. And go with the softest duro you can, even with all 70/62 duro mounts the car will shake like crazy and you will not notice the difference from a more solid mount aside form more vibes in the car.