Powerflex gearbox mount?

Hi guys,

So I've just fitted three powerflex mounts,
Upper engine mounts, Upper end torque mount and lower engine mount.

Now I see there is also a gearbox mount available. Worth doing? Haven't seen much on here on these, no reviews either. Can anyone give me some feedback? Things are already pretty tight and still vibrating a lot but I'm aware that this will settle down.

Thanks
 
In for info on this.

I currently have Upper Mount and Upper Torque arm bushes installed. On Monday 16th car is going in for a service and while it's there I'm having the upper engine mount taken out, and the lower engine mount installed. Doing some extra miles for work and the vibration/noise sitting on the motorway is getting a bit annoying. (from what I've seen on here, it's the upper engine mount that adds about 80% of the vibration).

Always wondered if the gearbox is worth doing too, don't think it add's any vibration, just tightens up the box? Although mine feels pretty good anyway to be fair.
 
Think it's just a case if your shifts feel a bit loose then it's probably worth doing but if you don't feel movement it's probably not worth the aggro