I think people's definition of "a lot" varies from person-to-person. To me, when someone says their car is vibrating a lot, I picture an old muscle car or an old diesel that rocks the car as it idles.
I also have a poly upper torque mount and never noticed much vibration. I have to replace my lower transmission torque mount and have decided to install a stock replacement due to many negative reviews.
There are many reviews of "a lot" of vibration transmitted to the cabin for Delrin subframe bushings if you have an auto transmission. I recently had them installed on mine and honestly, I barely noticed any change in NVH - like I have to concentrate to notice the change. I now enjoy the improved handling.