I'm on the THS mounts and have zero complaints about them. tried the INA street density mounts which fell apart and were awful, caused a blown turbo gasket. Tried the track mounts but they were way too hard. THS mounts are perfect fast road mounts, excellent price too. Vibratechnics mounts are probably very good but they are twice the price of the THS mounts - twice as good ... doubt it.
I have to say, 2000miles on with the track density mounts and I'm still liking them! Not bad at all!