On my Disco 2 I have Bearmach blues, BA2103 and BA 2104 . They are OK, the car is lifted with 2-3 inches and the front is a little upper than the rear(even now,after one year).
Can be a good idea if you have a winch or heavy front bumper. On the Bearmach leaflet, they are rated as Def.90, Disco,Disco2.