Mike @ Impossible Performance did the ones on my Octavia vRS. I found they transmitted A LOT more noise through the cabin and centre colsole / gearbox area of the car. However it did get rid of a lot of the 'nose dive' of the car.
I can't remember what brand they are, perhaps give him a call. They might have been the Vibratech ones but it was 2 years ago now.
Andy