I have tried a std one, a std one poly filled in the voids, and a full poly one.
The only thing I noticed was a SMALL amount of vibration, so small you keep forgetting about it, as it is really is only minor, I also found a drumming sound on mine when the fuel tank was at a certain level and I was doing a certain speed, a simple stick on acoustic pad that cost me £6 cure it 100%, as it took the resonant frequency outside that the mount could create.
The difference is night and day in terms of car control, you won't regret it.
If a bufty and wanting the std/ish look these can be poly filled and work perfectly, at least as well as the after market full poly ones, but at way under 1/2 the price.
tabetha