Rear Diff Mounting - gone again!

Hi All
Have had rear diff mounting (front) F1 (03) replaced 6 months ago and it has gone again! Have looked at those new(ish) Floflex sets of three - made from Polyurethane as they look harder wearing than the normal rubber ones. BUT, has anybody had them fitted on their vehicle, and are there any drawbacks that have been noticed from anyone? Live about 1 mile up a horrendous private road (track) with craters not potholes, and lakes not puddles these little blighters take quite a beating every day!

Use genuine Land Rover or opt for polybush ones, good reports on them

I have fitted the front one. They are considerably stiffer than the originals and I thought fitting all three might put more load on the centre bearings. Done about three months now, so far so good.

Considering the Flowflex my self as I think after 7 months my rear diff centre bearing is just starting to wear again.